2696 questions · with answers

Closest guess questions and answers

Closest Guess is the game where everyone says a number and whoever lands nearest to the truth takes the round. The questions look like trivia but play on instinct: nobody knows the exact figure, only how close they got.

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Science455 questions

How long is the Nile River?: 6,650 km
How deep is the Mariana Trench?: 10,935 m
What is Earth's circumference along the equator?: 40,075 km
How many million square kilometres is the Sahara Desert?: 9.2 million km²
How many metres below sea level is the Dead Sea?: 430 m
How many million square kilometres is the Pacific Ocean?: 165 million km²
How long is the Amazon River?: 6,400 km
At what temperature does water boil at the summit of Everest?: 71 °C
How many bones are there in an adult human?: 206 bones
How many times does the heart beat on average per day?: 100,000 beats
How many hairs are on a person's head on average?: 100,000 strands
How many grams does the human brain weigh on average?: 1,400 grams
How many kilometres does light travel per second?: 299,792 km
How many minutes does sunlight take to reach Earth?: 8 min
How many kilometres away is the Moon from Earth?: 384,400 km
How many seconds does blood take to make one full loop of the body?: 60 sec
How many seconds are there in a year?: 31,536,000 sec
About how many skeletal muscles does the human body have?: 600 muscles
By measurement, at roughly what top speed in km/h does a sneeze leave the mouth?: 50 km/h
About how many kilometres per hour does Earth move around the Sun?: 107,000 km/h
How many metres long is the small intestine?: 6 m
What percentage of the body is made of water?: 60 %
Assuming 7,500 steps a day for 80 years, how many kilometres does a person walk?: 164,000 km
How many metres long can a blue whale grow?: 30 m
How many kilograms does a blue whale's tongue weigh?: 2,700 kg
How many teeth does a snail have?: 14,000 teeth
How many hearts does an octopus have?: 3 hearts
How many months does an elephant's pregnancy last?: 22 months
Over a short distance, what top speed in km/h can a cheetah roughly reach?: 120 km/h
How many times per second does a hummingbird flap its wings?: 80 times
How many flowers do bees visit for 1 kilogram of honey?: 4,000,000 flowers
How many hours a day does a cat sleep on average?: 16 hours
How many million scent receptors does a dog have?: 300 million
How many hours a day does a giraffe sleep?: 2 hours
About how many times its own weight can a leafcutter ant carry?: 50 times
How many years can a sea turtle live?: 100 years
How many days can a camel go without water?: 15 days
How many grams does an ostrich egg weigh?: 1,400 grams
How many kilometres long is the Bosphorus?: 30 km
How many square kilometres is Lake Van?: 3,713 km²
How many metres tall is Mount Ararat, Turkey's highest mountain?: 5,137 m
How many kilometres is Turkey's coastline?: 8,333 km
How many million years ago did Cappadocia's fairy chimneys form?: 10 million years
Drinking two litres of water a day adds up to how many thousand litres over 80 years?: 58.4 thousand litres
At how many degrees does water freeze at sea level?: 0 °C
What is Earth's escape velocity in km per second, roughly?: 11.2 km/s
According to Dunbar, about how many people are in a person's circle of acquaintances?: 500 people
What is standard gravitational acceleration in m/s², roughly?: 9.81 m/s²
How many years can a gorilla live, roughly?: 40 years
How many years can a Greenland shark live, roughly?: 400 years
How fast can a kangaroo hop in km/h, roughly?: 70 km/h
How many stomachs does a cow have?: 4 stomachs
About how many million air sacs are there in an adult's lungs?: 300 million
Tossing a fair coin 10 times, what percentage chance is there that every toss lands the same side?: 0.2 %
How many kilometres is the total route of the Eurasia Tunnel project?: 14.6 km
How many nerve endings are in a fingertip?: 3,000 nerve endings
What is the atomic number of carbon?: 6 atomic number
According to a study, how many billion bacteria can live in one cubic centimetre of kitchen sponge?: 54 billion
According to a study, how many days on average does a new habit take to become automatic?: 66 days
How many metres can an albatross's wingspan reach, roughly?: 3.5 m
At how many degrees does water boil at sea level?: 100 °C
How many teeth does an adult dog usually have?: 42 teeth
How many million square kilometres is the Mediterranean, roughly?: 2.5 million km²
How many thousand km² is the Caspian Sea?: 371 thousand km²
How many cells are there in a sudoku grid?: 81 cells
How many litres of blood does the heart pump in a day?: 7,500 litres
How many tons does an average cloud weigh?: 500 tons
How many years can a queen bee live, roughly?: 5 years
How tall is Mount Uludağ in metres?: 2,543 m
How many atoms are in a water molecule?: 3 atoms
What percentage of Earth's fresh water is locked in glaciers, roughly?: 69 %
What is Mars's diameter in kilometres, roughly?: 6,779 km
How many kilograms does a blue whale's heart weigh, roughly?: 180 kg
How many teeth does an adult cat usually have?: 30 teeth
How tall can a giraffe get in metres?: 5.5 m
How many minutes does it take for the heartbeats of hand-holding lovers to sync up?: 3 min
What is the surface temperature of the Sun in degrees, roughly?: 5,500 °C
Losing five minutes every day equals how many full days over 80 years?: 101 days
How many million square kilometres is Antarctica, roughly?: 14.2 million km²
How many square kilometres is Lake Beyşehir, roughly?: 656 km²
How many oceans are there on Earth?: 5 oceans
How long is the Kızılırmak, Türkiye's longest river, in kilometres?: 1,355 km
How many months does it take to get over a breakup on average?: 3 months
How many grams of honey does one bee make in its lifetime?: 1 grams
How many chambers does the human heart have?: 4 chambers
Rolling a fair six-sided die four times, what percentage chance is there of getting at least one six?: 51.8 %
How many babies are born per minute worldwide?: 250 babies
How many times per second does a housefly beat its wings, roughly?: 200 times
According to research, how many people's faces can a person recognise on average?: 5,000 people
How many metres deep can a sperm whale dive, roughly?: 2,000 m
How many degrees can an owl turn its head, roughly?: 270 degrees
How many square metres is the surface area of human skin, on average?: 2 m²
What is the Sun's diameter in million kilometres, roughly?: 1.39 million km
How long is the Yavuz Sultan Selim Bridge in metres?: 2,164 m
In what year did the first human go to space?: 1,961 years
How many weeks does a worker bee live in summer, roughly?: 6 weeks
How many minutes can a dolphin hold its breath, roughly?: 10 min
How many trillion kilometres is one light year, roughly?: 9.46 trillion km
How many years does an olive tree live on average?: 500 years
What is the Moon's diameter in kilometres, roughly?: 3,475 km
How many days does a red blood cell live, roughly?: 120 days
How many weeks does a human pregnancy last on average?: 40 weeks
How many hours a day does a koala sleep, roughly?: 20 hours
In what year was Dolly, the first cloned mammal, born?: 1,996 years
How many natural moons does Earth have?: 1 moons
How many months does a bear sleep in hibernation?: 6 months
How many km/h does a penguin swim?: 10 km/h
About how many centimetres does an average hair grow in a month?: 1.2 cm
How many million times does a person blink in a lifetime?: 400 million
How many times a year does a snake shed its skin?: 4 times
How many kilometres long is Pınargözü, one of Türkiye's longest caves?: 16 km
How many seconds does a cheetah need to reach 100 km/h, roughly?: 3 sec
For how many seconds can a cheetah run at full speed?: 30 seconds
Assuming 70 kg and 60% water, how many litres of water are in an adult's body?: 42 litres
What is Earth's diameter in kilometres, roughly?: 12,742 km
How many metres does a snail travel in an hour?: 3 metres
When a firefly makes light, what percent of its energy goes to heat?: 2 percent
What percentage of Earth's atmosphere is oxygen, roughly?: 21 %
How many trillion trees are there on Earth?: 3 trillion
How many billion years old is Earth, roughly?: 4.54 billion years
How many of the human body's bones are in the feet?: 52 bones
How many kilos can an eagle's nest weigh?: 1,000 kg
How many insects can a bat eat in an hour?: 1,000 insects
How many grams can a single hair hold?: 100 grams
Some cicada species wait underground for up to how many years?: 17 years
How many million bacteria are exchanged between two people during a 10-second kiss?: 80 million
On an average night, how many minutes of REM sleep does a person get in total?: 100 min
How many billion neurons are in the human brain?: 86 billion
Breathing 15 times a minute, how many breaths does a person take in a day?: 21,600 breaths
How many thousand muscles are in an elephant's trunk, roughly?: 40 thousand muscles
How many pairs of chromosomes are in a human cell?: 23 pairs
How many thousand square kilometres is the Black Sea, roughly?: 436 thousand km²
How long is the 15 July Martyrs Bridge in Istanbul, in metres?: 1,560 m
How many times per second does a bee beat its wings, roughly?: 230 times
What is absolute zero in degrees Celsius, roughly?: -273.15 °C
How many natural moons does Mars have?: 2 moons
At most, how many metres can a kangaroo cover in one hop?: 9 metres
The brain is just 2% of body weight — what percentage of the body's energy does it use?: 20 %
With 23 people in a room, what percentage chance is there that at least two share a birthday?: 50.7 %
How many thousand ants live in one colony?: 250 thousand
How many metres can a bald eagle's wingspan reach, roughly?: 2.3 m
How many coconuts does a coconut palm bear in a year?: 75 fruits
How many times stronger than steel of the same thickness is spider silk?: 5 times
How fast can an ostrich run in km/h, roughly?: 70 km/h
How deep is Lake Baikal in metres?: 1,642 m
How many days does a dog's pregnancy last on average?: 63 days
About how many grams of skin cells does a person shed in a year?: 500 grams
How many million square kilometres is Africa, roughly?: 30.37 million km²
How many Earth years does one orbit of Jupiter take, roughly?: 12 years
How many flowers do bees visit for one jar of honey?: 2,000,000 flowers
According to a study, how many hours together does it take for an acquaintance to become a close friend?: 200 hours
What percentage of the day does a newly in-love person spend thinking about their partner?: 85 %
How many centimetres long is an ostrich egg, roughly?: 15 cm
According to scientific estimates, how many million animal species exist on Earth?: 7.7 million
What percentage of Earth's atmosphere is nitrogen, roughly?: 78 %
How many kilograms of food does an elephant eat per day?: 150 kg
What percentage of Earth's surface is covered by water, roughly?: 71 %
How many quills does a hedgehog have?: 5,000 quills
A habit that saves just one second a day saves how many minutes in a year?: 6.1 min
How many times its body length can a chameleon extend its tongue?: 2 floors
How many strands make up the DNA double helix?: 2 strands
How many litres of water can a cow drink a day, roughly?: 100 litres
How many kilograms of bamboo can a panda eat a day, roughly?: 12 kg
In a 2007 US study of 396 people, how many words did a person speak per day on average?: 16,000 words
The human eye is equal to a camera of how many megapixels?: 576 megapixels
Two hours a week with each of five close friends adds up to how many hours a year?: 520 hours
How many quadrillion ants are estimated to live on Earth?: 20 quadrillion
How tall is Mount Everest in metres?: 8,849 m
How many seconds does light take to cross the average distance from Earth to the Moon?: 1.28 sec
How many kilos of carbon dioxide does a tree absorb in a year?: 22 kg
How many metres per second does sound travel in air, roughly?: 343 m
How many billion years old is the Sun, roughly?: 4.6 billion years
How many seeds are in the centre of a sunflower?: 1,500 seeds
How many trillion bacteria live in the human body?: 39 trillion
How many seconds does it take to decide if you like someone on a first date?: 3 seconds
How long is the Fatih Sultan Mehmet Bridge in metres?: 1,510 m
How many thousand litres of water does a person drink in a lifetime?: 75 thousand litres
How many suckers are on an octopus's arms in total?: 2,000 suckers
How many years does a person spend sleeping in a lifetime?: 26 years
Spending one hour a year with each person in a 150-person circle takes how many hours in total?: 150 hours
According to a 2016 Hubble-based study, how many trillion galaxies are in the observable universe?: 2 trillion
How many seconds does sunlight take to reach Earth?: 500 sec
How long is the Grand Canyon in kilometres, roughly?: 446 km
How many people are usually in the innermost circle of someone's social network?: 5 people
How many days does an emperor penguin egg take to hatch, roughly?: 65 days
What is the atomic number of gold?: 79 atomic number
From how many metres does the lower Düden Waterfall drop into the sea?: 40 m
How many eyelashes does one eye have?: 150 eyelashes
How many days does a cat's pregnancy last on average?: 65 days
How many times stronger is a pig's sense of smell than a human's?: 2,000 times
How many centimetres of fat can a polar bear have, roughly?: 10 cm
How many days does a turtle egg take to hatch?: 60 days
How many years can an African elephant live, roughly?: 70 years
How many pores are in an eggshell?: 7,000 pores
Meeting four times a year for three hours, how many years until two friends reach 200 hours?: 17 years
How many bytes are in a kilobyte in binary counting?: 1,024 bytes
About how many tonnes of water does a medium cumulus cloud hold?: 500 tons
How many times its own length can a flea jump?: 100 times
How many days does a chicken egg take to hatch?: 21 days
How many hours a day does a sloth sleep, roughly?: 15 hours
According to research, in how many milliseconds does a first impression of a face form?: 100 ms
About how many litres of saliva does an adult produce per day?: 1.5 litres
According to medical sources, how many times a day does a healthy adult pass gas?: 14 times
How many litres of water can an adult elephant drink a day, roughly?: 200 litres
How many planets are there in the Solar System?: 8 planets
How many vertebrae are in a giraffe's neck?: 7 vertebrae
Meeting 10 hours a week, how many weeks until two people reach 200 hours?: 20 weeks
What is the atomic number of oxygen?: 8 atomic number
How many months does the initial excitement of love, the 'butterflies in your stomach' feeling, last on average?: 18 months
How many eggs does a hen lay in a year?: 300 eggs
How many hours can a crocodile stay underwater?: 2 hours
How many brains does an octopus have?: 9 brains
How many times a minute does a blue whale's heart beat?: 8 times
How many times per minute does your heart beat when you see your crush?: 100 times
How many seconds does an average hug between couples last?: 3 seconds
How many kilometres of blood vessels are in the human body?: 100,000 km
How many tons of space dust fall to Earth each day?: 100 tons
By what percentage do serotonin levels drop in people who are in love?: 40 %
How many times its own length can a flea jump, roughly?: 200 floors
How many teeth does a shark go through in its lifetime?: 30,000 teeth
How long is the Suez Canal in kilometres, roughly?: 193 km
Blinking 15 times a minute, how many times does someone blink in 16 waking hours?: 14,400 times
What is the main span of the 1915 Çanakkale Bridge in metres?: 2,023 m
How many times per minute can a hummingbird's heart beat in flight, roughly?: 1,200 shots
How many Earth years does one orbit of Saturn take, roughly?: 29.5 years
How many metres tall are the travertine terraces of Pamukkale, roughly?: 160 m
How many kilometres is the undersea section of Marmaray, roughly?: 1.4 km
How many minutes does one ISS orbit of Earth take, roughly?: 90 min
How many minutes can an emperor penguin stay underwater, roughly?: 20 min
On average, how many seeds are inside a pomegranate?: 600 pieces
How many litres of blood does an adult body hold, roughly?: 5 litres
How many hours a day does a lion rest or sleep, roughly?: 20 hours
How many teeth does a healthy adult normally have?: 32 teeth
How long is the Panama Canal in kilometres, roughly?: 82 km
Assuming 1.5 kg a day for 80 years, how many tonnes of food does a person eat?: 43.8 tonnes
How many kilos of skin does a person shed in a lifetime?: 35 kg
How many kernels are on a corn cob?: 800 pieces
How many calories does the brain burn in a day?: 300 calories
How many different words can a dog tell apart?: 165 words
The Moon's gravity is what percentage of Earth's, roughly?: 16.5 %
How long is Lake Baikal in kilometres, roughly?: 636 km
According to Dunbar, about how many stable social relationships can a person maintain?: 150 relationships
How fast can a polar bear run in km/h, roughly?: 40 km/h
How many elements are in the periodic table?: 118 elements
How many millimetres is the smallest bone in the human body, roughly?: 3 mm
How many centimetres tall does an emperor penguin get, roughly?: 120 cm
How long is the Channel Tunnel in kilometres, roughly?: 50.5 km
How many million Earths would fit inside the Sun?: 1.3 million
Folded in half 42 times, how many kilometres thick would a 0.1 mm sheet of paper become?: 440,000 km
What is Jupiter's diameter in kilometres, roughly?: 139,820 km
Growing 1% a day, how many times its starting value does an amount reach after 365 days?: 37.8 times
How many times a minute does a hummingbird's heart beat?: 1,200 times
How many eyes does a starfish have?: 5 eyes
How many lobes do human lungs have in total?: 5 lobes
Assuming 15 minutes a day for 80 years, how many days does a person spend on the toilet?: 304 days
Among 50 people, what's the percentage chance that at least two share a birthday?: 97 %
How many million kilometres is one astronomical unit, roughly?: 149.6 million km
What is the pH of pure water?: 7 pH
Walking 10,000 steps a day adds up to how many million steps a year?: 3.65 million steps
About how many millimetres do fingernails grow in a month?: 3 mm
How many days does a butterfly live on average?: 14 days
How many square kilometres is Lake Tuz, roughly?: 1,665 km²
Talking 30 minutes a day, how many days until two people reach 200 hours in total?: 400 days
What is the traditional reference body temperature measured by mouth, in degrees?: 37 °C
According to research, how many minutes until an interrupted person gets back to work?: 23 min
In the love experiment, how many minutes were two strangers asked to hold eye contact?: 4 min
How long is the Euphrates in total, in kilometres?: 2,800 km
How many billion stars are in the Milky Way?: 200 billion
How many years can a sequoia live?: 3,000 years
What percentage of people tilt their head to the right when kissing?: 65 %
By water-footprint calculations, how many litres of water does producing one hamburger take?: 2,400 litres
From how many kilometres away can an eagle spot its prey?: 3 km
How many million km² is Greenland?: 2.16 million km²
How many times more sensitive is a dog's nose than a human's?: 10,000 times
How hot does a lightning bolt get in °C?: 30,000 °C
How many degrees does a lightning bolt heat up to?: 30,000 degrees
How many chromosomes does a human normally have?: 46 chromosomes
How tall is K2 in metres?: 8,611 m
How many arms does a starfish usually have?: 5 arms
By water-footprint calculations, how many litres of water does one cup of coffee cost?: 140 litres
What is the salinity of seawater in parts per thousand?: 35 per thousand
By what percentage does water expand when it freezes?: 9 %
At how many degrees is water at its densest?: 4 °C
At how many degrees does gold melt?: 1,064 °C
How many colours are traditionally counted in a rainbow?: 7 colours
If the DNA in one human cell were stretched end to end, how many metres would it be?: 2 m
Roughly how many protein coding genes are in the human genome?: 20,000 genes
What percentage of the water on Earth is in the oceans?: 97 %
How many elements in the periodic table are found in nature?: 94 elements
How many arms does a snowflake have?: 6 arms
How many stages does a butterfly go through as it develops?: 4 stages
How many kilometres below the surface do diamonds form?: 150 km
How many million square kilometres is the continent of Asia?: 44.6 million km²
How many kilometres wide is the Strait of Gibraltar at its narrowest?: 14 km
How many kilometres does one degree of latitude cover?: 111 km
How many kilometres thick is the crust under the continents on average?: 35 km
How many metres per second does sound travel through water?: 1,480 m
How many degrees is the average surface temperature of the Earth?: 15 °C
How many different pairs can be formed in a class of 30 people?: 435 pairs
How many different possibilities does a four digit numeric code have?: 10,000 possibilities
As Earth spins on its axis, how many kilometres an hour does a house on the equator travel?: 1,700 km
How many kilometres is the radius of Earth, whose circumference is 40,000 kilometres?: 6,400 km
If we put Everest at the deepest point on Earth, how many metres below the water would its summit stay?: 2,100 metres
How many kilometres an hour does Earth move around the Sun?: 107,000 km
How many times the volume of all the oceans is Earth's volume?: 800 times
How many hours would it take to drive around the world non-stop at 100 kilometres an hour?: 400 hours
How many hours does sound take to go around the world?: 33 hours
How many times does light go around the world in one second?: 7.5 times
How many marathons do you have to run to cover the world's circumference?: 950 times
How many hours does a plane flying at 900 kilometres an hour take to get from the equator to the North Pole?: 11 hours
How many million turns does a tyre with a 2-metre circumference make rolling around the world?: 20 million
Someone taking 5,000 steps a day walks the world's circumference how many times in 80 years?: 3 times
How many days does a train doing 60 kilometres an hour take to cover the 9,300 kilometre Trans-Siberian?: 6.5 days
How many hours does a tsunami at 800 km an hour take to reach 16,000 km away?: 20 hours
If we lengthen a rope around the equator by 1 metre, how many centimetres does it rise off the ground?: 16 centimetres
Standing at the shore, how many kilometres away does a 1.70 metre tall person see the horizon?: 5 km
Everest is as tall as a building of how many floors if each floor is 3 metres?: 3,000 times
If Earth were a 24 centimetre basketball, how many millimetres would Everest stick out?: 0.2 mm
If Everest sat in the 10,900 m Mariana Trench, how many metres deep would its peak be?: 2,000 metres
Descending 1 metre a second, how many hours does a submarine take to reach the bottom of the Mariana Trench?: 3 hours
If Everest rises 4 millimetres a year, how many years does it take to grow 1 metre?: 250 years
Cooling 0.65 degrees every 100 metres, by how many degrees has the air cooled at Everest's summit?: 58 degrees
If all the water on Earth were poured into a single cube, how many kilometres would one edge be?: 1,100 km
If Earth's surface were perfectly flat, how many metres deep a lake would all the water make?: 2,600 metres
At the oceans' average depth of 3,700 metres, how many atmospheres is the pressure?: 370 atmospheres
If all the salt in the oceans were spread over the land, how many metres thick would the layer be?: 150 metres
Flowing 200,000 cubic metres a second, how many cubic kilometres of water does the Amazon carry in a day?: 17 km³
How many days does it take to float down the 6,650-kilometre Nile on a raft drifting at 5 kilometres an hour?: 55 days
Rivers carrying 37,000 km³ a year would fill empty oceans in how many thousand years?: 36 thousand years
If Antarctica's 28 million cubic kilometres of ice melted, how many metres would sea level rise?: 70 metres
If 10 metres of an iceberg show above the water, how many metres tall is it in total?: 100 metres
At 400 m a year, in how many years does the 400 km Lambert Glacier's ice reach the sea?: 1,000 years
At sea level, how many tonnes does the atmosphere press onto every square metre?: 10 tons
If the whole atmosphere had sea-level density, how many kilometres thick would it be?: 8 km
With half a gram of water per cubic metre, how many tonnes of water does a 1-cubic-kilometre cloud hold?: 500 tons
In a place that gets 11 metres of rain a year, how many tonnes of water fall on a 100-square-metre roof?: 1,100 tons
How many million tonnes of precipitation fall on Earth's surface every second?: 16 million tons
With no air resistance, in how many seconds would a stone dropped from Everest's peak land?: 42 seconds
Falling at 8 metres a second from 5,000 metres up, how many minutes does rain take to reach the ground?: 10 minutes
How many tonnes is the water inside a cloud one cubic kilometre in volume?: 500 tons
If everyone on Earth held hands, how many times would the line wrap around the planet?: 300 times
Packed four people to a square metre, how many square kilometres would all of humanity cover?: 2,000 km²
At 70 kilograms a head, how many million tonnes does all of humanity weigh?: 560 million tons
If all the land on Earth were split equally, how many square metres would each person get?: 20,000 m²
If the world's 3 trillion trees were shared out equally, how many trees would each person get?: 400 pieces
How many times would a country of 780,000 square kilometres fit into Earth's land area?: 190 times
Widening 2.5 centimetres a year, how many million years did the Atlantic take to reach 5,000 kilometres?: 200 million years
Walking 30 kilometres a day, how many days does it take to cross the 5,000-kilometre Sahara?: 170 days
Descending 10 metres a second, how many hours would a lift take to reach the centre of the Earth?: 180 hours
How many billion grains of sand half a millimetre across fit into 1 cubic metre?: 8 billion
How many litres of water does making one cotton T-shirt use?: 2,700 litres
How many litres of water does making one pair of jeans use?: 10,000 litres
How many litres of water does it take to make one sheet of A4 paper?: 10 litres
How many litres of water does it take to make a kilo of beef?: 15,400 litres
How many litres of water does it take to make a kilo of chicken?: 4,300 litres
How many litres of water does it take to produce one egg?: 200 litres
How many litres of water does it take to make a litre of milk?: 1,000 litres
How many litres of water does it take to make a kilo of cheese?: 5,000 litres
How many litres of water does it take to produce a 100 g bar of chocolate?: 1,700 litres
How many litres of water does it take to produce a cup of coffee (125 ml)?: 130 litres
How many litres of water does it take to produce a mug of tea (250 ml)?: 30 litres
How many litres of water does it take to make a kilo of rice?: 2,500 litres
How many litres of water does it take to produce a slice of bread (50 g)?: 80 litres
How many litres of water does it take to make a kilo of almonds?: 16,000 litres
How many litres of water does it take to make a kilo of olive oil?: 14,500 litres
How many litres of water does it take to make a kilo of potatoes?: 300 litres
How many litres of water does it take to produce an apple (150 g)?: 125 litres
How many litres of water does it take to produce a glass of beer (250 ml)?: 75 litres
How many litres of water does it take to produce a glass of wine (125 ml)?: 110 litres
How many litres of water does it take to make a kilo of sugar?: 1,800 litres
How many litres of water does it take to produce a glass of orange juice (200 ml)?: 170 litres
How many litres of water does it take to make a kilo of bananas?: 800 litres
A 60-watt bulb never switched off for a whole year uses how many kilowatt-hours?: 530 kWh
Someone using a 10-watt LED instead of 60 watts saves how many kilowatt-hours over 25,000 hours?: 1,250 kWh
A 1,500-watt air conditioner running six hours a day uses how many kilowatt-hours in 90 days?: 800 kWh
Charging your phone two hours a day at 5 watts uses how many kilowatt-hours a year?: 4 kWh
How many seconds does a 2,000-watt heater need to boil 1.5 litres of water at 20 degrees?: 250 seconds
A fridge drawing 150 watts that runs a third of the day uses how many kilowatt-hours a year?: 440 kWh
How many litres of water does it take to make a pair of leather shoes?: 8,000 litres
How many kilowatt-hours of heat does one cubic metre of natural gas give?: 10 kWh
A house burning 1,800 cubic metres of natural gas over the winter puts out how many kilograms of CO2?: 3,600 kilograms
How many kilograms of CO2 does burning one litre of petrol put out?: 2.3 kilograms
A car burning 7 litres per 100 kilometres gets through how many litres of petrol over 15,000 kilometres?: 1,050 litres
How many kilowatt-hours of energy are in one litre of petrol?: 9.5 kWh
How many tonnes of CO2 does making one tonne of steel put out?: 2 tons
A plane burning 4 litres of fuel a second gets through how many litres on a 10-hour flight?: 144,000 litres
Compared with making new aluminium, what percentage of energy does recycling save?: 95 percent
Recycling one tonne of paper saves how many trees?: 17 trees
How many 15-gram drink cans come out of one tonne of aluminium?: 67,000 cells
In a mine yielding 1 gram of gold per tonne, how many tonnes of rock go into a 20-gram wedding ring?: 20 tons
From ore that is 1 percent copper, how many tonnes of ore go into 1 tonne of copper?: 100 tons
1,000 smartphones with 30 milligrams of gold each yield how many grams of gold?: 30 grams
An 8-minute shower at 9 litres a minute uses how many litres of water?: 72 litres
A tap dripping once a second (0.05 ml) loses how many litres of water a year?: 1,600 litres
A 6-litre toilet flushed 5 times a day uses how many litres of water a year?: 11,000 litres
What percentage of the world's water is fresh water?: 2.5 percent
What percentage of the fresh water drawn worldwide goes to farming?: 70 percent
How many litres of water does an Olympic swimming pool (50 × 25 × 2 metres) hold?: 2,500,000 litres
Drinking 2 litres of water a day adds up to how many litres of drinking water over 80 years?: 58,000 litres
If 600 mm of rain falls on a 100-square-metre roof in a year, how many litres of water are collected?: 60,000 litres
How many seconds does a radio signal take to reach the Moon and come back?: 2.5 seconds
With Mars 55 million km away, how many minutes does a signal take to get there from Earth?: 3 minutes
How many centimetres does light travel during a single cycle of a 3 GHz processor?: 10 centimetres
Doing 1 operation a second, how many years would it take to finish what a 3 GHz processor does in 1 second?: 100 years
How many times bigger is a 60 kWh electric-car battery than an 18.5 Wh phone battery?: 3,200 times
How many million 1-metre charging cables would it take to circle the Earth?: 40 million cables
Doubling on every square, on which chessboard square does a single grain of wheat pass 1 billion?: 31 squares
How many billion different 8-character passwords can be made from 26 lowercase letters?: 200 billion combinations
The number of possible orders of a 52-card deck has how many digits?: 68 digits
How many million different ways are there to pick 6 numbers out of 49?: 14 million combinations
How many songs fit on a music CD as MP3s?: 175 songs
A Blu-ray disc holds how many times the data of a music CD?: 36 times
A one-terabyte drive holds how many music CDs' worth of data?: 1,400 CDs
Watching an hour of HD series every day uses how many gigabytes of data a month?: 90 gigabytes
How many gigabytes does the plain text of a million books take up?: 500 gigabytes
Taking fifty photos every day adds up to how many gigabytes a year?: 55 gigabytes
How many gigabytes is an hour of uncompressed Full HD video?: 560 gigabytes
How many novels fit on an 8 GB e-reader?: 8,000 novels
Scanned in colour at 300 dpi, how many megabytes is one A4 page uncompressed?: 26 megabytes
How many megabytes would a 12-megapixel phone photo be without compression?: 36 megabytes
If a film were printed frame by frame, how many metres high would the paper stack be?: 17 metres
How many thousand pixels fit in a square centimetre of a phone screen?: 33 thousand pixels
How many million operations does a processor do in a single blink?: 900 million operations
How many hours would it take to type a megabyte of text by hand?: 56 hours
How many minutes does it take to copy a 1-terabyte drive at 100 megabytes per second?: 170 minutes
Counting a processor's ten billion transistors one a second would take how many years?: 320 years
How many thousand transistors fit side by side across the thickness of a human hair?: 14 thousand transistors
How many milliseconds does a data packet take to reach the other side of the world online?: 100 milliseconds
Over a geostationary satellite, how many milliseconds does the voice take to reach the other end?: 240 milliseconds
A request that goes to the other side of the world and back takes how many million processor cycles?: 600 million cycles
How many terabytes does a one-gigabit line download in a whole day non-stop?: 11 terabytes
How many hours would an electric car battery keep an average home running?: 144 hours
How many kilowatt-hours does charging one phone for its whole life use?: 20 kWh
How many times would the energy in a litre of petrol charge a phone battery?: 520 times
On a home's electricity for one year, how many thousand kilometres would an electric car go?: 20 thousand km
How many million kilowatt-hours a year does a data centre with ten thousand servers use?: 44 million kWh
How many megabytes do all the messages a person writes in a lifetime add up to?: 110 megabytes
How many megabytes is a 20,000-page encyclopedia with 4,500 characters per page?: 90 megabytes
How many hours does it take to read a novel aloud from start to finish?: 11 hours
How many million words does a person read in a lifetime?: 100 million words
If a person's whole life were recorded in HD video, how many terabytes would it be?: 3,300 terabytes
Looking at a phone five hours a day, how many years out of 60 are spent on the screen?: 12.5 years
If wheat doubles on each chess square, how many billion tonnes is on the 64th square?: 460 billion tons
A rumour that doubles at every step reaches the whole world in how many steps?: 33 steps
A data archive growing seven percent a year doubles in how many years?: 10 years
A number doubled a thousand times has how many digits?: 302 digits
An archive growing one percent a day grows how many times over in a year?: 38 times
How many folds does it take for a sheet of paper to get taller than Everest?: 27 folds
If you add capitals and digits to an eight-character password, how many times more combinations are there?: 1,000 times
If everyone in a class of 25 shakes hands with everyone else, how many handshakes is that?: 300 handshakes
At most how many steps does binary search need to find a record among a billion?: 30 steps
What percentage chance is there that two people in a class of 25 share a birthday?: 57 percent
How many digits does the number of possible 128-bit encryption keys have?: 39 digits
If a coin is tossed twenty times, how many different heads-tails sequences come out?: 1,000,000 sequences
How many digits long is the number of possible Rubik's cube states?: 20 digits

Culture297 questions

How many members does the United Nations have?: 193 countries
How many square kilometres is Vatican City?: 0.44 km²
How many countries does Russia share a land border with?: 14 countries
According to UN estimates, what is the world population in mid-2026, in billions?: 8.3 billion
According to Ethnologue, how many living languages are there in the world?: 7,100 languages
How many square kilometres is Turkey?: 783,562 km²
How many districts are there in Turkey?: 973 districts
According to Türkiye's 2024 official census, what is Istanbul's population in millions?: 15.7 million
How many cups of tea are drunk per person per year in Turkey?: 1,300 cups
Any scrambled Rubik's Cube can always be solved in at most how many moves?: 20 moves
According to Boeing, how many million parts make up a 747?: 6 million parts
How many metres is a marathon?: 42,195 m
Typing 40 words a minute, how many minutes to write a 1,000-word text?: 25 min
Ordering food five times a week adds up to how many orders a year?: 260 orders
On average, how many seconds does a song last?: 200 seconds
How many minutes is a football match in regular time?: 90 min
According to 2023 estimates, how many billion Google searches are made worldwide each day?: 8.5 billion
How many balls are used in standard American pool?: 16 balls
How many cups of coffee are drunk worldwide each day?: 2 billion
Watching 3 hours of video a day uses up how many full days in a year?: 46 days
How many teams take part in the World Cup?: 48 teams
On average, how many names appear in a big-budget film's end credits?: 1,500 names
How many different currencies are used in the world?: 180 currencies
How many days does filming a movie take on average?: 60 days
On average, how many words does a book contain?: 80,000 words
How many museums are there in the world?: 100,000 museums
Forty-five minutes of eating a day adds up to how many years over a lifetime of 80?: 2.5 years
How many thousand people run in a big marathon?: 40 thousand
What's the average age of first marriage worldwide?: 28 years
How many billion cups of tea are drunk worldwide in a year?: 3,000 billion
How many billion pizzas are eaten worldwide in a year?: 5 billion
How many spokes are in a bicycle wheel?: 32 strands
What percentage of profiles do guys swipe right on in dating apps?: 46 percent
A 10-minute shower every day adds up to how many full days over 50 years?: 127 days
How many Lego pieces are made every second worldwide?: 1,100 pieces
How many words in current use are in the Oxford English Dictionary?: 170,000 words
How many pages does a book have on average?: 320 pages
Approximately how many thousand couples get married in a day worldwide?: 110 thousand couples
According to 2024 data, how many hours a day does a person worldwide spend online on average?: 6.7 hours
In 2024, what percentage of the world's population used the internet?: 68 %
How many strings does a classical harp have, roughly?: 47 strings
How many pins are used in bowling?: 10 pins
In how many languages does the largest library hold works?: 470 languages
A 10-watt bulb on for five hours a day uses how many kilowatt-hours a year?: 18.25 kWh
Two hours of grocery shopping a week equals how many full days over 50 years?: 217 days
What percentage of couples started out as friends first?: 66 %
How many pieces are in a backgammon set in total?: 30 pieces
How many movements does a symphony have?: 4 movements
Roughly how many words are enough to speak a language?: 3,000 words
On average, how many times a week do married couples argue?: 3 times
Thirty minutes of social media a day equals how many full days over 20 years?: 152 days
How many innings does a baseball game have?: 9 innings
How many million people celebrate a birthday each day?: 21 million
In theory, how many time zones is the world divided into?: 24 time zones
How many seconds does a Formula 1 pit stop take?: 2 seconds
How many million kilometres of roads are there on Earth?: 64 million km
In the US, how many months' salary is traditionally expected to be spent on an engagement ring?: 2 months
How many words can one ballpoint pen write?: 45,000 words
A family throwing away three loaves a week wastes how many loaves a year?: 156 loaves
Fifteen minutes a day looking for keys or lost things adds up to how many full days over 20 years?: 76 days
How many crisps are in a bag on average?: 45 crisps
How many studs are on a standard Lego brick?: 8 studs
How many questions are in the famous '36 Questions to Fall in Love' list?: 36 questions
If refocusing takes 20 minutes and there are three interruptions a day, how many hours are lost per year?: 365 hours
How many dimples are on a golf ball?: 336 dimples
How many million square kilometres is Canada, roughly?: 9.98 million km²
How many weeks in advance are wedding invitations typically sent out?: 8 weeks
How many days after love at first sight do Romeo and Juliet get married?: 1 days
What percentage of profiles do women swipe right on in dating apps?: 14 percent
Twenty minutes on the phone in bed each night equals how many full days over 10 years?: 51 days
How many million new books are published worldwide in a year?: 2 million
One hour of commuting a day, 250 workdays a year, adds up to how many full days over 40 years?: 417 days
How many countries does the Equator pass through?: 13 countries
How many minutes long can a Eurovision song be at most?: 3 minutes
How many cells are there in total in a standard sudoku grid?: 81 cells
How many keys does a piano have?: 88 keys
A shower running 9 litres a minute uses how many litres in 8 minutes?: 72 litres
Drinking one 1.5-litre bottle of water a day uses how many bottles a year?: 365 bottles
How many thousand parts are in a car?: 30 thousand
How many grams does an Olympic medal weigh?: 550 grams
How many panels make up a classic black-and-white football?: 32 pieces
In wedding anniversary traditions, which year is the 'paper' anniversary?: 1 year
On average, how many years after marriage is the first child born?: 2 years
At 4 hours of screen time a day, how many years of a 50-year span are spent looking at screens?: 8.3 years
How many words a minute does an average person speak?: 130 words
How many UNESCO World Heritage sites are there?: 1,200 sites
On average, how many years after divorce do people remarry?: 4 years
Playing 90 minutes of online games a day equals how many full days over 10 years?: 228 days
How many strings does a violin have?: 4 strings
How many independent countries are there in South America?: 12 countries
How many hours does finishing a 1,000-piece jigsaw take on average?: 5 hours
Working out 45 minutes three times a week adds up to how many full days over 10 years?: 49 days
How many official languages does the United Nations have?: 6 languages
How many days does the average honeymoon last?: 7 days
In American pool, how many balls are on the table in total?: 16 balls
On average, how many minutes does a feature film run?: 110 minutes
According to YouTube's 2022 figure, how many hours of video were uploaded every minute?: 500 hours
Wearing headphones 2 hours a day equals how many full days over 10 years?: 304 days
How many billion photos are taken worldwide in a year?: 1,900 billion
Four cups a day at 200 ml each adds up to how many litres of tea a day?: 0.8 litres
According to Eurostat, how many kilograms of packaging waste per person are generated in the EU each year?: 190 kg
In the West, how long does an average wedding ceremony last?: 30 min
How tall is the Leaning Tower of Pisa in metres?: 56 m
How many continents are there on Earth?: 7 continents
According to 2024 data, how many minutes a day does a person worldwide spend on social media on average?: 143 min
What percentage of married couples in the US met online?: 40 %
Five hours of series a week adds up to how many full days over 20 years?: 217 days
Reading 200 words a minute, how many hours to finish a 90,000-word book?: 7.5 hours
How many words a minute does an average person read?: 240 words
How many strings does a classical guitar have?: 6 strings
How many million people use music streaming services worldwide?: 700 million
How many metres above the floor is a basketball hoop?: 3.05 m
How many metres wide is Leonardo da Vinci's mural The Last Supper?: 8.8 metres
How many tiles are in a standard set of dominoes?: 28 pieces
Twenty minutes of reading the news a day adds up to how many full days over 30 years?: 152 days
How many holes does a golf course have?: 18 holes
How many million tons of chocolate are eaten worldwide per year?: 7.5 million tons
Brushing your teeth twice a day for two minutes adds up to how many full days over 80 years?: 81 days
How many episodes does a Netflix series season have on average?: 10 episodes
What percentage of marriages worldwide are arranged?: 55 %
Two cups of coffee a day adds up to how many cups a year?: 730 cups
With a tap running 6 litres a minute, how many litres go down the drain in a two-minute brush?: 12 litres
How many days does an average wedding celebration last in India?: 3 days
How many months in advance does the average person plan a marriage proposal?: 3 months
According to 2023 estimates, how many billion photos are taken worldwide each day?: 5.3 billion
A 15-minute coffee break a day, 250 workdays a year, adds up to how many full days over 40 years?: 104 days
How many races are there in a Formula 1 season?: 24 races
Based on 2024 data, about how many thousand commercial flights take place worldwide each day?: 100 thousand
How many keys are on a computer keyboard?: 104 keys
How many times does the average person say they've been in love in their lifetime?: 3 times
How many million boxes of heart-shaped chocolates are sold in the US on Valentine's Day?: 36 million
How many months does the average couple date before making it official?: 2 months
How many hours does an opera last on average?: 3 hours
How many seconds do visitors spend in front of the Mona Lisa on average?: 15 seconds
How many metres long is an Olympic swimming pool?: 50 m
How many days does the Tour de France last?: 23 days
How long is the Lycian Way in kilometres, roughly?: 540 km
Sending 50 messages a day, how many messages is that in 10 years?: 182,500 messages
On average, which date does the first kiss happen in a relationship?: 2 date
According to 2024 estimates, how many million emails are sent worldwide every minute?: 250 million
How many member countries does the European Union have?: 27 countries
How many metres of line can one pencil draw?: 50,000 metres
How many words are on a newspaper page on average?: 1,000 words
How many seconds does a TV commercial run on average?: 30 seconds
Checking your phone 100 times a day adds up to how many times a year?: 36,500 times
On average, how many weeks pass between visits for long-distance couples?: 3 weeks
How many minutes is an ice hockey game in regular time?: 60 min
In how many moves at most can a Rubik's Cube be solved?: 20 moves
What percentage of people admit to secretly checking their partner's phone?: 30 %
How many pins are set up in a bowling lane?: 10 pins
How many horsehairs are in a violin bow?: 160 hairs
What anniversary is the 'golden wedding anniversary'?: 50 years
How many metres long is a tennis court, roughly?: 23.77 m
How many frames per second does an animated film show?: 24 frames
How many hours does a round-the-world flight take?: 40 hours
How many different kinds of cheese are there in the world?: 1,800 varieties
Snoozing in bed 10 minutes every morning adds up to how many full days over 20 years?: 51 days
How many players from a rugby team are on the field?: 15 players
Unlocking your phone 80 times a day adds up to how many unlocks a year?: 29,200 times
How many photos are shot on average for one magazine cover?: 500 photos
According to industry estimates, how many billion cups of tea are drunk worldwide each day?: 3 billion
Per the UN's 2024 report, how many kilos of food per person go to waste at home each year?: 79 kg
Two hours at the hairdresser once a month adds up to how many full days over 60 years?: 60 days
How many thousand cups of coffee does a person drink in a lifetime?: 20 thousand
How many kilometres is the Olympic marathon?: 42 km
Spending 15 minutes a day deciding what to watch costs how many hours a year?: 91 hours
Thirty minutes of cooking a day adds up to how many full days over 40 years?: 304 days
How many metres long is the standard pitch used in international football matches?: 105 m
At what age do people have their first kiss on average?: 15 years
How many countries share a land border with Türkiye?: 8 countries
How many cities does a concert tour visit on average?: 30 cities
How many provinces are there in Türkiye?: 81 provinces
How many kilos does an Oscar statuette weigh?: 4 kg
How many players are on a cricket team?: 11 players
How many books fit on a library shelf on average?: 30 books
How many million roses are sold worldwide on Valentine's Day?: 250 million
How many days does the love story of Romeo and Juliet actually last?: 4 days
How many songs does an album have on average?: 12 songs
How many metres high is a football goal?: 2.44 m
According to industry estimates, how many billion cups of coffee are drunk worldwide each day?: 2.25 billion
How many million marriages take place in China each year?: 7 million
How many grapes go into one bottle of wine?: 600 pieces
How many points wins a volleyball set?: 25 points
How many parts are inside a mobile phone?: 1,000 pieces
How many decibels can a stadium crowd reach?: 130 decibels
How many metres tall is Michelangelo's David, roughly?: 5.17 m
How many million people speak the world's most-spoken language?: 1,500 million
As of 2024, how many emojis were defined in the Unicode standard?: 3,800 emojis
According to 2024 counts, how many billion registered websites are there on the internet?: 1.1 billion
How many kilometres of wiring are in an Airbus A380 passenger plane?: 500 km
How many months does the average couple spend planning their wedding?: 12 months
How many centimetres tall is the Mona Lisa painting?: 77 cm
How many segments is a dartboard divided into?: 20 segments
How many puzzles are in a puzzle magazine on average?: 40 puzzles
Twenty minutes of waiting in line a day adds up to how many full days over 40 years?: 203 days
How many minutes does an American TV episode last on average?: 42 minutes
How many pieces are in a drum kit?: 5 pieces
How many texts does the average person send their partner per day?: 25 texts
How many square metres of wall does one tin of paint cover?: 40 m²
How tall is the Galata Tower in metres, roughly?: 63 m
What top speed in km/h can a Formula 1 car reach?: 350 km/h
On average, how many moves does a chess game last?: 40 moves
In a football match, how many minutes is the ball actually in play?: 55 minutes
Three hours of cleaning the house a week adds up to how many full days over 50 years?: 325 days
How many metres above sea level is Sumela Monastery, roughly?: 1,200 m
Five minutes a day hunting for passwords takes how many hours a year?: 30 hours
How many million people use dating apps worldwide?: 350 million
How many seats does a cinema screen have on average?: 200 seats
After how many months do couples typically move in together?: 18 months
Roughly how many musicians play in a symphony orchestra?: 80 musicians
How many thousand steps does a marathon runner take in a race?: 55 thousand
A washing machine run four times a week runs how many times a year?: 208 times
How many sports were there at the Paris 2024 Olympics?: 32 sports
How many minutes does one lot take to sell at an auction?: 2 minutes
How many different writing systems are in use in the world?: 290 writing systems
How many metres wide is a football goal?: 7.32 m
How many slices is a pizza cut into?: 8 segments
How many minutes does a stand-up show last on average?: 60 minutes
Based on UNESCO data, how many million new book titles are published worldwide each year?: 2.2 million
How many games do you need to win a set in tennis?: 6 games
How many minutes does a stage play last on average?: 120 minutes
How many minutes does a circus show last on average?: 120 minutes
How many houses come in a Monopoly box?: 32 houses
How many rings are on the Olympic flag?: 5 rings
What is the maximum length of a football pitch in metres?: 105 metres
How many alphabets are in use in the world?: 45 alphabets
How many hours of video are uploaded to YouTube every minute?: 500 hours
Under FIBA rules, how many minutes long is a basketball game?: 40 minutes
A fridge using 1 kilowatt-hour a day consumes how many kilowatt-hours a year?: 365 kWh
How many metres is one lap of an Olympic athletics track?: 400 m
How many billion cards are sent worldwide on Valentine's Day?: 1 billion
How many films are made worldwide in a year?: 12,000 films
How long does the couple's first dance at a wedding typically last?: 3 min
How many official languages does the European Union have?: 24 languages
Ten minutes a day clearing junk email adds up to how many hours a year?: 61 hours
How many countries are there in the world?: 195 countries
On average, how many frames does a feature film contain?: 158,000 frames
How many UN member countries are there in Africa?: 54 countries
How tall is the Eiffel Tower in metres?: 330 m
How many coffee beans are ground for one cup of coffee?: 70 beans
How many pedals does a piano have?: 3 pedals
How many valves does a trumpet have?: 3 valves
How many holes does a harmonica have?: 10 holes
Going up one octave multiplies the frequency of a sound by how many times?: 2 times
How many concertos make up Vivaldi's The Four Seasons?: 4 concertos
Roughly how many works did Mozart compose?: 600 works
How many basic note names are there in Western music?: 7 notes
How many beats per minute does a mechanical metronome reach at most?: 208 beats
How many lines make up a sonnet?: 14 lines
How many Sherlock Holmes short stories did Arthur Conan Doyle write?: 56 stories
How many syllables make up a haiku?: 17 syllables
How many books make up Homer's Iliad?: 24 books
How many cantos make up Dante's Divine Comedy?: 100 cantos
How many books make up the Harry Potter series?: 7 books
How many volumes make up The Lord of the Rings?: 3 volumes
How many detective novels did Agatha Christie write?: 66 novels
How many acts make up a classical tragedy?: 5 acts
How many metres tall are the letters of the Hollywood sign?: 14 m
How many minutes did the first Oscar ceremony last?: 15 minutes
How many centimetres tall is an Oscar statuette?: 34 cm
In what year was the first Star Wars film released?: 1,977
In what year did Walt Disney's first feature length animation reach cinemas?: 1,937
In what year was the Venice Film Festival first held?: 1,932
In what year did Charlie Chaplin's first film come out?: 1,914
Roughly how many works did Picasso produce in his lifetime?: 50,000 works
For how many years did Van Gogh paint?: 10 years
How many primary colours are there on the colour wheel?: 3 colours
Roughly how many paintings did Rembrandt make?: 300 paintings
How many metres tall is the Venus de Milo?: 2 m
Roughly how many paintings by Vermeer survive today?: 34 paintings
How many floors does the Empire State Building have?: 102 floors
How many floors does the Burj Khalifa have?: 163 floors
How many metres tall is the Big Ben tower in London?: 96 m
How many metres tall is the Chrysler Building?: 319 m
How many years did it take to build the Sydney Opera House?: 14 years
How many metres tall is the Trevi Fountain in Rome?: 26 m
How many metres is the main span of the Golden Gate Bridge?: 1,280 m
How many metres long is Tower Bridge?: 244 m
By how many degrees does the Tower of Pisa lean?: 4 degrees
How many letters are there in the English alphabet?: 26 letters
How many letters does the Russian alphabet have?: 33 letters
How many basic letters make up the Korean Hangul script?: 24 letters
How many basic characters does Japanese hiragana have?: 46 characters
How many dots make up one letter in the Braille alphabet?: 6 dots
Roughly how many characters do you need to know to read everyday Chinese texts?: 3,000 characters
How many vowels are there in the English alphabet?: 5 letters
In what year was the Esperanto language introduced?: 1,887
How many metres does the penalty area extend from the goal line in football?: 16.5 m
How many players does a handball team have on the court?: 7 players
How many centimetres long is a table tennis table?: 274 cm
How many feathers does a badminton shuttlecock have?: 16 feathers
How many stitches does a baseball have?: 108 stitches
How many kilometres is the swimming leg of an Olympic triathlon?: 1.5 km
How many pawns does each player have in chess?: 8 pawns
How many medals did the most decorated athlete in Olympic history win?: 28 medals
In what year was the Wimbledon tennis tournament first held?: 1,877
How many laps does the 1500 metre swim take in an Olympic pool?: 30 laps

Records300 questions

How tall was Robert Wadlow, the tallest person in history?: 272 cm
How tall was the shortest adult man ever measured?: 55 cm
How long is the world's longest hair?: 5.6 m
How long is the longest moustache?: 429 cm
What is the total length of the longest fingernails on one hand?: 9 m
What is the 2021 world record for holding your breath after breathing pure oxygen, in minutes?: 24.6 min
What is the men's 100 metres world record in seconds?: 9.58 sec
How old was the oldest person who ever lived?: 122 years old
What is the 2023 world record for a single 3×3 Rubik's Cube solve, in seconds?: 3.13 sec
What is the diameter of the largest bubblegum bubble?: 51 cm
How many hours did Randy Gardner's 1964 sleep-deprivation experiment last?: 264 hours
How many metres tall is the Burj Khalifa, the tallest completed building?: 828 m
How long is the world's longest bridge?: 164 km
How big was the largest snowflake ever recorded?: 38 cm
How long is the longest cat from nose to tail?: 123 cm
How tall was Zeus, the tallest dog, at the shoulder?: 112 cm
How long is the longest snake in captivity?: 7.7 m
What is the largest shoe size ever?: 58 size
What is the most push-ups done in one minute?: 152 count
How much did the heaviest person ever weigh?: 635 kg
According to the Guinness record, in how many languages did one person prove fluency by test?: 42 languages
How many hours was the longest single-song performance?: 26 hours
How high was the highest parachute-free stunt jump?: 58 m
How many recorded children did the woman with the most children have?: 69 children
How long is the longest escalator?: 137 m
What is the lowest temperature ever recorded in Antarctica?: -89 °C
How many minutes did the shortest war last?: 38 min
How many metres per second does the world's fastest lift travel?: 21 metres
How many metres deep does the deepest-diving mammal go?: 2,992 metres
How many hours is the longest hula hooping record?: 100 hours
How many days does the world's longest train journey take?: 8 days
How many thousand people did yoga together at the largest session?: 100 thousand
How many hours did the record-holder stand on one foot?: 76 hours
How many million people attended the largest concert on record?: 3 million
How many metres deep is the world's deepest swimming pool?: 60 metres
How many skips is the jump rope record in one minute?: 348 times
How many kilometres deep is the deepest human-made hole?: 12 km
How many thousand kilometres a year does the longest-migrating bird fly?: 70 thousand km
How many hours did the fastest Everest ascent take?: 11 hours
How many square kilometres is the world's largest fungus?: 9 km²
From how many metres was the longest basketball shot made?: 34 metres
From how many kilometres up was the highest-altitude jump made?: 41 km
As of 2024, how many times had the person with the most Everest climbs reached the top?: 30 times
How many tons did the heaviest recorded blue whale weigh?: 190 tons
How many degrees is the highest temperature measured on Earth?: 56 degrees
What magnitude was the strongest earthquake ever recorded?: 9 magnitude
How many hours is the record for dancing the longest?: 126 hours
How many km/h is the fastest football shot?: 210 km/h
How many metres long is the world's longest bicycle?: 41 metres
How many hours is the record for watching TV the longest?: 94 hours
How many decibels is the loudest shout record?: 129 decibels
How many km/h is the fastest tennis serve?: 263 km/h
For how many million dollars did the priciest car sell?: 143 million
How many kilos is the deadlift record?: 501 kg
How many minutes did the longest standing ovation last?: 80 minutes
How many seconds is the record for eating a chocolate bar?: 25 seconds
How many centimetres tall was the tallest person ever?: 272 cm
How many T-shirts is the record for wearing at once?: 260 pieces
As of the end of 2024, how many centimetres was the men's pole vault record?: 626 cm
What is the top speed reached in free fall, in km/h?: 1,357 km/h
How tall is Angel Falls, the world's highest waterfall, in metres?: 979 m
How many metres wide was the biggest book?: 8 metres
How many metres was the biggest wave ever surfed?: 26 metres
How many metres long is the world's longest swimming pool?: 1,013 metres
How many hours is the longest continuous singing record?: 105 hours
How many tonnes can the strongest crane lift?: 5,000 tons
How many centimetres is the men's high jump world record?: 245 cm
How many carats was the largest rough diamond ever found?: 3,106 carats
How many tonnes did the biggest chocolate bar weigh?: 12 tons
How many centimetres is the record-breaking longest human tongue?: 10 cm
How many million copies has the best-selling album sold?: 70 million
How old was the oldest person to run a marathon?: 101 years old
How many metres long was the longest strand of spaghetti?: 455 metres
How many seconds did the longest-flying paper plane stay up?: 29 seconds
How many countries has the most-travelled person visited?: 196 countries
How many hours did the longest tennis match last?: 11 hours
How many languages did the person who knew the most speak?: 58 languages
How many metres tall is the tallest Lego tower?: 36 metres
How many metres up is the world's highest observation deck?: 555 metres
How many hot dogs is the record for eating in one minute?: 10 pieces
How many kilometres long is the world's longest urban cable car network?: 32 km
How many years did the world's longest engagement last?: 67 years
How many kilometres long is the world's longest rail tunnel?: 57 km
How many kilometres long is the world's longest undersea tunnel?: 54 km
How many metres tall is the world's largest land vehicle?: 96 metres
How many kilometres wide is the Sahara from east to west, roughly?: 4,800 km
How many metres was the biggest wave ever recorded?: 524 metres
What is the largest known shoe size?: 60 shoe size
How many tonnes can the biggest mining truck carry?: 450 tons
How many litres did the biggest mug hold?: 4,600 litres
How many hours is the longest smiling record?: 10 hours
How many thousand people were in the biggest football crowd?: 199 thousand
How many hours did the longest non-stop run last?: 80 hours
For how many million dollars did the priciest painting sell?: 450 million
How many spoons is the record for balancing at once?: 85 spoons
How many thousand kilometres is the longest continuous rail line?: 9 thousand km
How many grapes is the record for eating in one minute?: 73 pieces
How many people toppled in the biggest human domino?: 10,000 people
How many thousand tiles made up the longest domino chain?: 4,500 thousand
How many awards did the film with the most Oscars win?: 11 awards
How many km/h does the world's fastest production car do?: 490 km/h
How many years has the longest continuously burning light bulb been on?: 124 years
How many metres long is the world's longest limousine?: 30 metres
How many hours is the longest kite-flying record?: 180 hours
How many square metres was the biggest pizza?: 1,296 m²
How many years has the longest-operating spacecraft been working?: 48 years
How many years did the journey of the first person to walk around the world take?: 4 years
How many metres across is the trunk of the world's thickest tree?: 11 metres
How many balls is the juggling record for keeping in the air?: 11 balls
How many thousand square kilometres was the largest iceberg recorded?: 11 thousand km²
How many people were in the largest selfie ever taken?: 1,150 people
How many metres tall was the biggest sand sculpture?: 22 metres
How old was the oldest tortoise ever recorded?: 188 years old
How many words a minute does the fastest reader read?: 4,000 words
How many tonnes did the biggest birthday cake weigh?: 58 tons
How many km/h does the fastest roller coaster reach?: 240 km/h
How many thousand fireworks were set off in the biggest display?: 810 thousand
How many metres tall was the biggest snowman?: 37 metres
How many seconds is the men's 100 m freestyle swimming world record?: 46 seconds
How many hoops is the record for spinning hula hoops at once?: 200 hoops
How many marathons has the person with the most completed?: 1,000 marathons
How many centimetres are the longest fingernails?: 130 cm
How many metres is the highest commercial bungee jump?: 233 metres
How many metres is the deepest free dive?: 214 metres
How many metres tall is the world's tallest tree?: 116 metres
How many words a minute does the fastest talker say?: 640 words
How old was the oldest person to summit Everest?: 80 years old
How many metres tall was the biggest ice cream cone?: 3 metres
What is the capacity of the Rungrado 1st of May Stadium in Pyongyang?: 114,000 people
How many balloon animals did the record-holder make in an hour?: 747 pieces
How many hours is the record for standing completely still?: 17 hours
How many words per minute could the fastest typist type?: 216 words
How many thousand people kissed at the largest simultaneous kissing event?: 40 thousand
How many million litres does the world's largest aquarium hold?: 49 million
How many metres is the longest beard?: 5 metres
How many metres did the farthest-flying paper plane travel?: 88 metres
How many million books are in the world's largest library?: 25 million
How old is the oldest known tree?: 4,800 years old
How long is the world's largest cruise ship in metres?: 365 m
How many times did the person with the most spacewalks go outside?: 16 times
How many kilometres is the longest glider flight?: 3,000 km
How many kilos did the biggest burger weigh?: 1,100 kg
How many metres was the wingspan of the An-225, the largest plane?: 88 metres
How many years did the person with the longest career in one job work?: 84 years
How many times did the person with the most marriages in history get married?: 29 times
How many metres is the world's tallest roller coaster drop?: 139 metres
How many seconds is the fastest 100 m run backwards?: 13 seconds
How many minutes is the men's marathon world record?: 120 minutes
How many pieces does the biggest jigsaw puzzle on the market have?: 54,000 pieces
How many awards in competitive categories did the person with the most Oscars win?: 22 awards
How many years has the underground coal fire in Centralia burned?: 60 years
In how many seconds does the fastest animal run 100 metres?: 6 seconds
How many years has the longest-running radio show been on air?: 74 years
How many centimetres are the longest legs?: 135 cm
For how many million dollars did the priciest shoes sell?: 17 million
How many days did the longest traffic jam on record last?: 12 days
How many hours does the longest scheduled flight take?: 19 hours
How many metres is the shot put world record?: 23 metres
How many marshmallows is the record for eating in one minute?: 25 pieces
How many metres is the men's javelin world record?: 98 metres
How many metres long was the longest cake?: 6,500 metres
How many km/h does the peregrine falcon hit in a dive?: 389 km/h
How many pairs is the largest sock collection owned by one person?: 750 pairs
How many hours is the record for juggling a football without dropping it?: 24 hours
For how many thousand dollars did the priciest meal sell?: 25 thousand
How many metres is the longest golf drive?: 471 metres
How many metres across is the world's largest radio telescope?: 500 metres
How many digits of pi is the record for reciting from memory?: 70,000 digits
How many minutes is the static apnea breath-hold record without oxygen?: 11 minutes
How many thousand people joined the biggest snowball fight?: 8 thousand
How many kilometres long was the longest traffic jam on record?: 200 km
How many millimetres is the smallest book?: 1 mm
How many hours is the longest plank record?: 9 hours
How many hot dogs is the record for eating in ten minutes?: 76 pieces
How many million visitors a year does the most-visited museum get?: 9 million
Into how many languages has the most-translated book been translated?: 700 languages
How many days is the record for cycling around the world?: 78 days
How many hours is the record for the longest non-stop speech?: 124 hours
How many kilometres long is the world's longest road tunnel?: 24 km
How many thousand people joined the biggest pillow fight?: 6 thousand
How many hours did the longest kiss last?: 58 hours
How many metres tall was the biggest sandcastle?: 21 metres
How many centimetres across is Rafflesia, the largest flower?: 100 cm
How many names did the person who memorised the most names recall?: 200 names
How old was the longest-living person?: 122 years old
How many metres long was the longest sandwich?: 700 metres
How many kilos is the heaviest weightlifting lift?: 264 kg
How many days did the person with the longest single spaceflight stay up?: 437 days
How many centimetres is the men's long jump world record?: 895 cm
What's the world record for the longest marriage in years?: 86 years
How many metres is the Tokyo Skytree, the tallest tower in the world?: 634 metres
How many metres was the Warsaw radio mast, for a long time the tallest structure in the world?: 646 metres
How many metres is the Empire State Building up to the roof?: 381 metres
How many metres tall was the Great Pyramid of Giza when it was built?: 147 metres
How many metres tall is the tallest statue in the world?: 182 metres
How many metres tall is the television tower in Berlin?: 368 metres
How many metres is the tallest industrial chimney ever built?: 420 metres
How many metres tall is the London Eye?: 135 metres
How many tonnes does the great bell of Big Ben weigh?: 13.7 tonnes
How many metres tall is the Hoover Dam?: 221 metres
How many metres is the main span of the Akashi Kaikyo Bridge in Japan?: 1,991 metres
How many metres long is the Golden Gate Bridge?: 2,737 metres
How many metres is the Brooklyn Bridge in New York in total?: 1,825 metres
How many metres is the tallest mast of the Millau Viaduct in France?: 343 metres
How many kilometres is the sea bridge linking Hong Kong and Macau?: 55 km
How many kilometres long is the Vasco da Gama Bridge in Lisbon?: 17 km
How many metres long is the wall of the Three Gorges Dam in China?: 2,335 metres
How many kilometres is the Delaware Aqueduct tunnel that carries water to New York?: 137 km
How many metres down is the deepest metro station ever built?: 105 metres
How many kilometres of mapped passages does Mammoth Cave in the United States have?: 686 km
How many metres down does the deepest known cave in the world go?: 2,200 metres
How many metres high does the ceiling of the Son Doong cave in Vietnam rise at most?: 200 metres
How many metres is the average depth of the oceans?: 3,700 metres
How many metres deep is the deepest mine on Earth?: 4,000 metres
How many metres is the deepest point reached in scuba diving?: 332 metres
At how many metres of altitude is Lake Titicaca?: 3,812 metres
How many metres above sea level is the city of La Paz?: 3,640 metres
How many metres above sea level is the highest settlement lived in all year round?: 5,100 metres
At how many metres of altitude is the highest airport in the world?: 4,411 metres
How many metres is the highest point of the Tibet railway?: 5,072 metres
How many metres is Ojos del Salado, the highest volcano in the world?: 6,893 metres
How many metres is Mauna Kea from the ocean floor to its summit?: 10,200 metres
How many metres is Kilimanjaro, the highest mountain in Africa?: 5,895 metres
How many metres is Mont Blanc, the highest mountain in the Alps?: 4,808 metres
From how many metres up do the Victoria Falls drop?: 108 metres
How many kilometres per hour did the Shanghai maglev top out at in regular service?: 431 km/h
How many kilometres per hour is the top speed reached by a train on wheels?: 574 km/h
How many kilometres per hour could the SR-71 spy plane reach?: 3,530 km/h
How many kilometres per hour did the X-15 rocket plane reach?: 7,274 km/h
How many kilometres per hour did the Concorde airliner fly at?: 2,180 km/h
How many kilometres per hour did the ThrustSSC car do when it broke the sound barrier?: 1,228 km/h
How many kilometres per hour is the water speed record set by a speedboat?: 511 km/h
How many thousand kilometres per hour has the fastest vehicle carrying people done?: 40 thousand km/h
How many metres was the Seawise Giant, the longest ship in history?: 458 metres
How many metres long is the biggest submarine ever built?: 175 metres
How many thousand containers can the biggest container ships carry?: 24 thousand containers
How many metres is the wingspan of the Stratolaunch aircraft?: 117 metres
How many tonnes does the Tsar Bell in Moscow weigh?: 200 tonnes
How many kilograms was the biggest gold nugget ever found?: 72 kg
How many tonnes does the biggest meteorite ever found weigh?: 60 tonnes
How many centimetres across was the biggest hailstone ever to fall?: 20 cm
How many cubic metres is the trunk volume of the General Sherman tree?: 1,487 m³
How many kilos can the coco de mer, the biggest seed in nature, weigh?: 25 kg
How many metres long is the biggest crystal in the Naica cave in Mexico?: 11 metres
How many kilometres long is the Andes mountain range?: 7,000 km
In how many seconds was the fastest 200 metre sprint in history run?: 19.19 sec
How many seconds did the fastest 1500 metre run in history take?: 206 sec
How many seconds is the fastest 50 metre freestyle swim in history?: 20.9 sec
How many kilometres did the person who swam the Amazon from end to end cover?: 5,268 km
In what year was Everest first climbed without bottled oxygen?: 1,978
How old was the youngest climber to reach the summit of Everest?: 13 years old
How many United States patents are registered in Edison's name?: 1,093 patents
How many years did the longest reigning world chess champion keep the title?: 27 years
How old was the youngest person ever to receive a Nobel Prize?: 17 years old
How old was the oldest person to win a Nobel Prize?: 97 years old
What is the highest number of titles one driver has won in Formula 1 history?: 7 titles
How many times has the country with the most World Cup wins been champion?: 5 times
How many days did the longest flight without ever landing last?: 64 days
In how many months did the fastest climber finish all 14 peaks above 8000 metres?: 6 months
How many thousand square kilometres is Lake Superior, the biggest freshwater lake in the world?: 82 thousand km²
In how many days did the first person to sail around the world alone and nonstop finish?: 312 days
Roughly how many kilometres did the first person to walk around the world cover?: 23,000 km
How many kilometres is the longest distance a person has run in 24 hours?: 319 km
How many centimetres a day can bamboo, the fastest growing plant in the world, grow?: 90 cm
How many kilometres did the longest known lightning bolt stretch?: 768 km
How many kilometres per hour was the fastest wind ever measured on Earth?: 408 km/h
How many metres of rain a year does the wettest place in the world get?: 12 m
How many kilometres does the biggest coral reef in the world stretch?: 2,300 km
How many kilometres is the longest glacier in the world?: 400 km
How old was the clam that is the oldest animal ever known?: 507 years old
How many kilometres is the longest bus route in the world?: 6,200 km
How many thousand square kilometres is the biggest salt flat in the world?: 10 thousand km²
How many million square kilometres is the biggest rainforest in the world?: 5.5 million km²
The honey found in ancient Egyptian tombs was still good after how many thousand years?: 3 thousand years
How many metres across is the leaf of the giant water lily, the biggest leaf that floats on water?: 3 m
How many kilometres does the ice sheet covering Antarctica reach at its thickest?: 4.8 km
How many kilograms did the heaviest pumpkin ever grown weigh?: 1,247 kg
How many kilograms did the heaviest watermelon ever grown weigh?: 159 kg
How many kilograms did the heaviest cabbage ever grown in a garden weigh?: 62 kg
How many metres was the longest carrot ever grown?: 6.2 m
How many metres across was the biggest cookie in history?: 30 m
For how many years has the oldest restaurant that never closed been serving?: 300 years
For how many years has the longest running play in history been on stage?: 73 years
For how many years has the pitch drop experiment, the oldest experiment still running, been going?: 99 years
How many years ago was the oldest university still teaching founded?: 938 years
Roughly how many years did the oldest company in the world last before it closed?: 1,400 years
Roughly how many years old is the oldest wooden building still standing?: 1,300 years
How many hours in total does Wagner's Ring cycle, the longest opera staged, last?: 15 hours
In how many moves did the longest chess game in history end?: 269 moves
How many people stay on the Antarctic continent through the winter?: 1,000 people
How many people live on Tristan da Cunha, one of the most remote settlements in the world?: 250 people
How many kilometres from the nearest land is the point in the ocean furthest from land?: 2,688 km
How many people live in the Vatican, the country with the smallest population?: 800 people
How many million people a day pass through the busiest train station in the world?: 3.5 million
How many degrees is the lowest temperature measured in the coldest settlement in the world?: -68 °C
How many kilometres from the North Pole is the northernmost permanent settlement in the world?: 817 km
How many square kilometres is Monaco, the most densely populated country?: 2 km²
Roughly how many kilometres is the longest metro network in the world?: 830 km
How many metres above the valley is the deck of the highest bridge in the world?: 565 m
How many steps does the staircase with the most steps in the world have?: 11,674 steps

History300 questions

How long is the Great Wall of China in total?: 21,196 km
How many years did the Ottoman Empire last?: 623 years
Roughly how old are the Pyramids of Giza?: 4,500 years
How many years did the Hundred Years' War actually last?: 116 years
In what year did the Titanic sink?: 1,912 years
In what year did the first iPhone come out?: 2,007 years
In what year did women in Turkey win the right to vote in parliamentary elections?: 1,934 years
In what year did the Berlin Wall come down?: 1,989 years
How many years did World War I last?: 4 years
In what year did humans first set foot on the Moon?: 1,969 years
How many years are there between Cleopatra and the building of the pyramids?: 2,500 years
How many million years ago did the dinosaurs go extinct?: 66 million years
How many years ago was Hagia Sophia built?: 1,490 years
How many hours did the first washing machine take for one load?: 2 hours
Roughly how many years ago did people start wearing shoes?: 40,000 years
How many years ago did the fridge arrive in homes?: 100 years
Roughly how many kilometres long was the Silk Road?: 6,400 km
In what year did euro banknotes and coins enter circulation?: 2,002
Roughly how many years ago did humans start controlling fire?: 1,000,000 years
Roughly how many years ago did Homo sapiens appear?: 300,000 years
How many seconds did the first aeroplane flight last?: 12 seconds
How many tons did the first electronic computer weigh?: 27 tons
How many years did the Panama Canal take to build?: 10 years
How many people does the Aspendos Theatre hold, roughly?: 12,000 people
In what year was Napoleon defeated at Waterloo?: 1,815
Roughly how many stone blocks went into the Great Pyramid?: 2,300,000 blocks
Roughly how many years ago did paper money come into use?: 1,100 years
How many metres did the first aeroplane flight cover?: 37 metres
In what year did the Great Depression begin?: 1,929
Roughly how many years ago did people start making glass?: 5,000 years
How many years did the Vietnam War last?: 19 years
At its peak, how many million people lived in the Roman Empire?: 60 million
In what year was the first heart transplant performed?: 1,967
In what year did the world population first reach 1 billion?: 1,804
In roughly what century did the Renaissance begin?: 14 century
How many of Magellan's ships made it back?: 1 ships
How many people could the Colosseum hold?: 50,000 people
How many years did the American Civil War last?: 4 years
How many minutes did the first mobile phone's battery last?: 30 minutes
In what year did the first PlayStation go on sale?: 1,994 years
Roughly how many years old is the Colosseum?: 1,950 years
In what year did the Second World War begin?: 1,939 years
In how many pieces was the Statue of Liberty shipped to America?: 350 pieces
How many years ago did washing machines become common?: 90 years
In what year was the Universal Declaration of Human Rights adopted?: 1,948
How many years ago was the zipper invented?: 130 years
In what year was Everest first climbed?: 1,953
On his first voyage, how many days did it take Columbus to reach the Americas from the Canary Islands?: 36 days
How many years ago was the dishwasher invented?: 140 years
How many years ago was the emoji first created?: 26 years
In what year was the first email sent?: 1,971
In what year was the Higgs boson confirmed?: 2,012
In what year did the French Revolution begin?: 1,789 years
How many metres tall is the Statue of Liberty, including its pedestal?: 93 metres
How many kilobytes of memory did Apollo 11's computer have?: 64 kilobytes
How many years ago did Queen Victoria start the white wedding dress tradition?: 185 years
In what year was the James Webb telescope launched?: 2,021
In what year did the Chernobyl disaster happen?: 1,986 years
In what year was the Eiffel Tower completed?: 1,889
How many years ago did the last ice age end?: 11,700 years
In what year did the Black Death reach Europe?: 1,347
Roughly how many years old is the ancient city of Petra?: 2,300 years
In what year was the first mobile phone call made?: 1,973
How many years did the French Revolution last?: 10 years
In what year was the double helix structure of DNA revealed?: 1,953
Roughly how many years did ancient Egyptian civilization last?: 3,000 years
How many years ago did the first supermarket open?: 109 years
How many years ago was the barcode first used?: 51 years
How many years old is Çatalhöyük, roughly?: 9,000 years
In what year was the US Declaration of Independence adopted?: 1,776 years
In what year was Newton's Principia published?: 1,687
How many years ago was the first text message sent?: 33 years
How many years did Magellan's voyage around the world take?: 3 years
How many grams did the first mobile phone weigh?: 1,100 grams
Roughly how many years old is Angkor Wat?: 900 years
In what year did the Cuban Missile Crisis happen?: 1,962
How many years did Leonardo da Vinci take to finish the Mona Lisa?: 4 years
How long was the Titanic in metres?: 269 m
How many years ago was the first traffic light installed?: 155 years
In what year was the Ottoman Empire founded?: 1,299
Roughly how many years old is the Terracotta Army?: 2,200 years
In what year did World War I begin?: 1,914
Roughly how many years ago did calendars come into use?: 5,000 years
In what year was the first World Cup held?: 1,930
In what year did the Thirty Years' War begin?: 1,618
How many floors could the first passenger lift rise?: 5 times
How many km/h could the first automobile do?: 16 km/h
How many years did Nelson Mandela spend in prison?: 27 years
How many people in total have set foot on the Moon?: 12 people
In what year was Wikipedia founded?: 2,001
Roughly how many years ago did people start using chairs?: 5,000 years
Roughly how many years ago was soap discovered?: 4,800 years
In what year was the Magna Carta signed?: 1,215
Roughly how many years ago did the fork become common at the table?: 500 years
In what year did the Western Roman Empire fall?: 476
In what year was the World Wide Web proposed?: 1,989
In what year did the video game Pong come out?: 1,972
How many kilometres long was the Berlin Wall?: 155 km
How many years back does the first computer password go?: 60 years
How many kilometres of roads did ancient Rome have?: 80,000 km
Over how many generations was a medieval cathedral finished?: 4 generations
In what year did Columbus reach the Americas?: 1,492 years
How many years did the Taj Mahal take to build?: 22 years
How many people were aboard the Titanic's maiden voyage?: 2,224 people
Roughly how many years ago was the toothbrush invented?: 500 years
In what year did Gutenberg invent the printing press?: 1,440
In what year did the Spanish flu pandemic begin?: 1,918
In what year was the Berlin Wall built?: 1,961
Roughly how many years ago was the first musical instrument made?: 40,000 years
Roughly how many years ago was writing invented?: 5,500 years
For how many years was Topkapı Palace the Ottoman seat of government, roughly?: 400 years
In what year was the Human Genome Project completed?: 2,003
How many kilos did a medieval knight's armour weigh?: 25 kg
Roughly how many years did the Byzantine Empire last?: 1,100 years
In what year was Facebook founded?: 2,004
In what year was the Hubble Space Telescope launched?: 1,990
How many oarsmen were on a Viking ship?: 30 oarsmen
How many years old is Göbeklitepe, roughly?: 11,600 years
In what year were the first modern Olympics held?: 1,896
Roughly how many years ago was chocolate first made as a drink?: 3,500 years
In what year was the atomic bomb dropped on Hiroshima?: 1,945
For how many years has the ISS been continuously crewed?: 25 years
Roughly how many years did the Roman Empire stand?: 500 years
How many years did World War II last?: 6 years
How many thousand people worked on the Moon landing project?: 400 thousand
How many days did Apollo 11 take to reach the Moon?: 4 days
For how many years was the Great Pyramid the tallest structure on Earth?: 3,800 years
In what year was Darwin's On the Origin of Species published?: 1,859
How many years back do the first cave paintings go?: 45,000 years
How many hours did the Titanic take to sink?: 3 hours
How many years ago was the first postage stamp printed?: 185 years
In what year did Bitcoin appear?: 2,009
Roughly how many years ago was the mirror made?: 8,000 years
How many years back does the history of the Maiden's Tower go, roughly?: 2,500 years
How many years did Queen Elizabeth II reign?: 70 years
How many hours did Neil Armstrong spend on the Moon?: 21 hours
How many workers built the Eiffel Tower?: 300 workers
Roughly how many years old is Stonehenge?: 5,000 years
In what year was YouTube founded?: 2,005 years
In what year was penicillin discovered?: 1,928
In what year was Istanbul conquered?: 1,453 years
In what year was the first successful powered flight?: 1,903 years
How many soldiers were in a Roman legion?: 5,000 soldiers
Roughly how many years ago did people start baking bread?: 14,000 years
How many thousand years ago did the wedding ring tradition begin in Ancient Egypt?: 5 thousand years
How many years did Voyager 1 take to reach interstellar space?: 35 years
How many years ago were the first Olympics held in ancient Greece?: 2,800 years
How many hours did taking the first photograph take?: 8 hours
In what year did the Russian Revolution take place?: 1,917
How many years did apartheid last in South Africa?: 46 years
In what year was the Republic of Türkiye proclaimed?: 1,923 years
In roughly what year was Machu Picchu built?: 1,450
In what year was the first photo of a black hole published?: 2,019
How many years ago did the first website go live?: 34 years
In what year were the Nobel Prizes first awarded?: 1,901
Roughly how many metres tall was the Lighthouse of Alexandria?: 110 metres
How many years after it sank was the Titanic's wreck found?: 73 years
How many lifeboats were on the Titanic?: 20 lifeboats
Roughly how many years ago were the first coins minted?: 2,700 years
In what year did the first Xbox go on sale?: 2,001 years
Roughly how many years ago did farming begin?: 12,000 years
Roughly how many years ago did cats move into homes?: 9,500 years
In what year did the Hundred Years' War begin?: 1,337
Roughly how many years ago did dogs start living with humans?: 15,000 years
How many metres tall is the glass pyramid of the Louvre, roughly?: 21.6 m
How many years ago did plastic bags come into use?: 60 years
How many people does the great theatre of Ephesus hold, roughly?: 25,000 people
In what year did Türkiye adopt the Latin alphabet?: 1,928 years
Roughly how many years ago did people start using umbrellas?: 4,000 years
In what year was Instagram released?: 2,010
In what year did the Soviet Union dissolve?: 1,991 years
Roughly how many years ago was the wheel invented?: 5,500 years
In what year was the Woodstock festival held?: 1,969
How many people could the Baths of Caracalla in Rome hold at once?: 1,600 people
In what year did Watt improve the steam engine?: 1,769
How many years did Notre-Dame Cathedral take to build?: 182 years
In what year did the Turkish Grand National Assembly open?: 1,920 years
Roughly how many kilometres long are Istanbul's historic walls in total?: 22 km
In what year did the IBM PC come out?: 1,981
In what year did the Second World War end?: 1,945 years
How many years was the Mona Lisa missing after it was stolen?: 2 years
How many years did the Cold War last?: 44 years
In what year was the United Nations founded?: 1,945
In what year was Twitter founded?: 2,006
Roughly how many years ago was the first toothpaste made?: 5,000 years
In what year was the first edition of Encyclopaedia Britannica printed?: 1,768
In what year was the telephone patented?: 1,876
How many years did Michelangelo take to paint the Sistine Chapel?: 4 years
How many years apart are the modern Olympics held?: 4 years
In what year was Voyager 1 launched?: 1,977
How many years has the Sagrada Familia been under construction?: 140 years
How many years did the longest-reigning monarch in European history rule?: 72 years
Roughly how many years ago did people start brewing beer?: 7,000 years
In what year was Sputnik launched into space?: 1,957
In what year was Google founded?: 1,998 years
How many thousand workers built the Great Pyramid?: 20 thousand
How many years did the Suez Canal take to build?: 10 years
By demographers' 2022 estimate, how many billion people have ever lived?: 117 billion
In what year did the Vesuvius eruption bury Pompeii?: 79 years
Roughly how many years ago was the tin can invented?: 215 years
How many metres tall is the main tower of Angkor Wat?: 65 metres
How many metres long is the Great Sphinx in Egypt?: 73 metres
How many days did mummification take in ancient Egypt?: 70 days
In what year was the tomb of Tutankhamun found?: 1,922
How many kilograms does the gold mask of Tutankhamun weigh?: 10 kg
How many different writing systems is the Rosetta Stone written in?: 3 writing systems
How many years did Ramesses II rule Egypt?: 66 years
How many articles make up the Code of Hammurabi?: 282 articles
What base was the number system used by the Sumerians?: 60 base
How many letters are there in the ancient Greek alphabet?: 24 letters
How many columns surround the outside of the Parthenon?: 46 columns
Roughly how many metres tall was the Colossus of Rhodes?: 33 metres
How many days did the ancient Olympic Games last?: 5 days
How old was Alexander the Great when he became king?: 20 years old
According to legend, how many hills was Rome built on?: 7 hills
How many aqueducts carried water to ancient Rome?: 11 aqueducts
How many columns are there in the great hall of the Karnak Temple in Egypt?: 134 columns
Roughly how many soldier figures are there in the Terracotta Army?: 8,000 statues
How many years did Augustus, the first emperor of Rome, rule?: 41 years
How many million square kilometres did the Roman Empire reach at its largest?: 5 million km²
How many kilometres long was the Royal Road of the Persian Empire?: 2,700 km
How many years did the Holy Roman Empire last?: 844 years
How many khanates did the Mongol Empire break into as it fell apart?: 4 khanates
At its largest, what percentage of the world's population did the British Empire rule?: 23 percent
How many kilometres long was the road network of the Inca Empire?: 40,000 km
How many years did the Tudor dynasty stay in power in England?: 118 years
How many years did the Romanov dynasty stay on the throne in Russia?: 304 years
How many years did the Ming dynasty rule in China?: 276 years
How many years did the Tokugawa shogunate last in Japan?: 265 years
How many years did it take to build the Forbidden City in Beijing?: 14 years
In what year was the city of Petra rediscovered by a European traveller?: 1,812
In what year was Tenochtitlan, the Aztec capital, founded?: 1,325
How many steps does the Pyramid of Kukulkan at Chichen Itza have in total?: 365 steps
Roughly how many years ago was the city of Mohenjo daro in the Indus Valley founded?: 4,500 years
How many Moai statues have been found on Easter Island?: 900 statues
How many tonnes do the great sarsen stones of Stonehenge weigh on average?: 25 tonnes
How many ships did Christopher Columbus set out with on his first voyage?: 3 ships
How many years was Marco Polo away from home during his journey through Asia?: 24 years
For how many years did Ibn Battuta travel?: 29 years
In what year did Vasco da Gama reach India by sea?: 1,498
Roughly how many years before Columbus did the Vikings reach North America?: 500 years
In what year was the continent of Antarctica first sighted?: 1,820
In what year did Amundsen reach the South Pole?: 1,911
Roughly how many years did the city of Pompeii lie under ash?: 1,700 years
In what year did Karl Benz patent the motor car?: 1,886
In what year was the first known photograph in the world taken?: 1,826
How many metres tall are the giant statues in front of the Abu Simbel temple in Egypt?: 20 metres
How old was Cleopatra, Queen of Egypt, when she came to the throne?: 18 years old
Roughly how many years ago was paper invented in China?: 1,900 years
In roughly which century did eyeglasses come into use?: 13 century
In what year did Mendeleev publish the periodic table?: 1,869
In what year did Roentgen discover X rays?: 1,895
How many Nobel Prizes did Marie Curie win?: 2 prizes
In what year did Galileo observe the four big moons of Jupiter?: 1,610
In what year did Einstein set out the general theory of relativity?: 1,915
In what year did Edward Jenner give the first vaccination?: 1,796
In what year was the Celsius temperature scale proposed?: 1,742
In what year did the first underground line open in London?: 1,863
For how many years was the Ford Model T made?: 19 years
In what year did the first high speed train line in Japan start running?: 1,964
Roughly how many years ago was the first two wheeled bicycle built?: 210 years
How many hours did Concorde take to fly between New York and London?: 3.5 hours
How many years did it take to build the Trans Siberian Railway?: 25 years
In what year did the first passenger service by steam train begin?: 1,825
In what year was the first telegraph message in Morse code sent?: 1,844
In what year did regular television broadcasts begin?: 1,936
In what year was the first patent for the fax machine taken out?: 1,843
Roughly how many copies of the Gutenberg Bible were printed?: 180 copies
In what year was the first commercial radio broadcast made?: 1,920
How many symbols were there in the first emoji set?: 176 symbols
In what year was the first stock exchange in the world set up in Amsterdam?: 1,602
In what year was the oldest bank still in business founded?: 1,472
In what year did the first credit card come into use?: 1,950
In what year did the first cash machine go into service?: 1,967
Roughly how many years ago did Coca-Cola go on sale?: 140 years
In what year did the tulip mania in the Netherlands peak?: 1,637
Roughly how many paintings did Van Gogh make?: 900 paintings
Roughly how many thousand works are on display in the Louvre?: 35 thousand
How many symphonies did Beethoven compose?: 9 symphonies
How old was Mozart when he wrote his first composition?: 5 years old
How many children did Bach have?: 20 children
How many sonnets did Shakespeare write?: 154 sonnets
How many athletes competed at the 1896 Athens Olympics?: 241 athletes
In what year was FIFA founded?: 1,904
How many rules were there in the first basketball rulebook Naismith wrote?: 13 rules
In what year did women first take part in the Olympic Games?: 1,900
In what year were the Paralympic Games first held?: 1,960
In what year was the first world chess championship held?: 1,886
How many minutes did Yuri Gagarin's space flight last?: 108 minutes
How many minutes did the first spacewalk last?: 12 minutes
How many kilograms of rock in total did the Apollo missions bring back from the Moon?: 382 kg
How many missions in the Apollo programme managed to land on the Moon?: 6 missions
In what year did the Viking 1 spacecraft land on Mars?: 1,976
In what year was the first part of the International Space Station launched?: 1,998
How many years ago did the microwave oven come into kitchens?: 80 years
Roughly how many years ago was the match invented?: 200 years
Roughly how many years ago was the vacuum cleaner built?: 125 years
In what year did Edison patent his light bulb?: 1,879
In what year was Velcro patented?: 1,955
In what year was today's Lego brick patented?: 1,958

344 questions

How many ads does the average person see in a day?: 5,000 ads
How many hours does a person spend waiting in queues in a lifetime?: 3,000 hours
What is the most slices you can cut a pizza into with 4 straight cuts?: 11 slices
In how many different orders can 4 people line up?: 24 ways
About how many calories are in a banana?: 105 calories
What is 2 to the power of 10?: 1,024
How many hours of a lifetime are spent kissing?: 336 hours
How many years is one billion seconds?: 32 years
A snail in a 10 m well climbs 3 m by day and slips 2 m at night. How many days to get out?: 8 days
How many months does an average long-distance relationship last?: 14 months
If 3 cats catch 3 mice in 3 minutes, how many cats catch 100 mice in 100 minutes?: 3 cats
How many seconds does an average kiss last?: 12 seconds
How many friends does a couple typically have in common?: 12 friends
Walking 20 kilometres a day, how many years to go around the Earth in theory?: 5.5 years
What is the carbon footprint of one email in grams?: 4 grams
How many times does an average heart beat per minute?: 72 times
Writing 1 to 100, how many times do you write the digit 9?: 20 times
How many months does an engagement last on average worldwide?: 13 months
How many bones is a baby born with?: 300 bones
How many times a day does an adult laugh?: 17 times
If you overtake second place in a race, what place are you in?: 2
How many degrees does the hour hand turn in 12 hours?: 360 degrees
How many kilos of waste does a person produce in a year?: 250 kg
How many kilos of food does the average person eat in a year?: 800 kg
How many milligrams of caffeine are in a glass of tea?: 47 mg
Rolling two dice, what is the chance the total is 7?: 17 %
How many decibels is a whisper?: 30 decibels
If 5 machines make 5 parts in 5 minutes, how long do 100 machines take for 100 parts?: 5 minutes
How many litres of water does a person drink in a year?: 700 litres
What do two opposite faces of a die add up to?: 7
How many centimetres does hair grow in a month?: 1 cm
How many years does a plastic bottle take to break down in nature?: 450 years
At a table of 6, how many different pairs can chat?: 15 pairs
Up to how many thousand hertz can the human ear hear?: 20 thousand Hz
How many million matches happen on Tinder each day?: 26 million
How many people are needed for a shared birthday to be more likely than not?: 23 people
Lily pads double each day and fill the lake on day 30. On which day is the lake half full?: 29 days
How many weeks can a person last without food?: 3 weeks
How many photos are taken worldwide every second?: 60,000 photos
At what age does a person usually have their first real love?: 17 years old
How fast does a sneeze travel in km/h?: 50 km/h
How many minutes does an average first date last?: 90 minutes
How many face cards are in a deck?: 12 cards
How many decibels can the human voice reach?: 129 decibels
How many times does a person sneeze in a lifetime?: 55,000 times
How many times does a couple break up and get back together?: 2 times
How many grams of skin does the body shed a day?: 1 grams
How many days after a break-up do people clean up their social media?: 7 days
In the US, how many guests does an average wedding have?: 130 people
How many taste buds does the tongue have?: 10,000 taste buds
How many times a day does the average person blink?: 15,000 times
How many million colours can the human eye tell apart?: 10 million
How many items can a person grasp at a glance without counting?: 4 items
In 2020, how many billion messages were sent on WhatsApp each day?: 100 billion
About how many calories are in a slice of pizza?: 285 calories
For how many months does the brain stay in the intense "in love" phase?: 18 months
How many days of a year fall on a weekend?: 104 days
How many years of a lifetime are spent on the phone?: 9 years
How many times does a person fall in love in a lifetime?: 3 times
A cat sits in each of a room's 4 corners, and each cat faces 3 cats. How many cats are in the room?: 4 cats
How many squares of all sizes are there on a chessboard?: 204 squares
How many years do couples date before getting married?: 5 years
How many books does the average person read in a year?: 4 books
Flipping a coin 3 times, what is the chance of all heads?: 13 %
How many words does the average person speak a day?: 16,000 words
How many times does the average person move house in a lifetime?: 11 times
How many days can a person survive without water?: 3 days
Folding a sheet of paper 7 times in theory, how many layers do you get?: 128 layers
How many pentagons are on a classic football?: 12 pentagons
How many different scents can the nose tell apart?: 1,000,000 scents
What pH is stomach acid?: 2 pH
If 8 people each shake hands once with everyone else, how many handshakes happen?: 28 handshakes
How many days does skin take to renew itself?: 27 days
How many steps does the average person take a day?: 5,000 steps
How many tiles are in a rummikub-style tile game set?: 106 pieces
How many degrees does the minute hand turn in one hour?: 360 degrees
After how many months do couples first say "I love you"?: 5 months
How many breaths does a person take per minute?: 15 times
How many edges does a cube have?: 12 edges
How many decades are in a century?: 10 decades
How many minutes a day do couples talk to each other?: 35 minutes
How many seconds of hugging release the happiness hormone?: 20 seconds
How many minutes does a marriage proposal last on average?: 5 minutes
How many times a day does a child laugh on average?: 300 times
How many metres long are an adult's intestines?: 8 metres
How many profiles does a user swipe a day on a dating app?: 140 profiles
How big a calorie deficit burns 1 kg of fat?: 7,700 calories
How many seconds does it take to form a first impression?: 7 seconds
How many pieces are in a chess set in total?: 32 pieces
At most, how many Sundays can February have?: 5 Sundays
How many times does a person get their heart broken in a lifetime?: 5 times
How many squares are on one face of a Rubik's Cube?: 9 squares
How many seconds does short-term memory hold?: 20 seconds
About how many calories are in a burger?: 550 calories
In a knockout tournament with 16 teams, how many matches are played?: 15 matches
How many minutes does it take to fall asleep on average?: 15 minutes
How many times a day does a 12-hour clock show 11:11?: 2 times
Two fathers and two sons each caught a fish, making 3 fish in total. How many were they?: 3 people
How many times a month does someone check an ex's profile?: 4 times
How fast do nerve signals travel in km/h?: 430 km/h
A 5-character code using only 0 and 1 — how many combinations exist?: 32 combinations
How many litres of water does a shower use per minute?: 10 litres
In a lifetime, how many times around the Earth does a person walk?: 5 times
A brick weighs 1 kg plus half a brick. How much does the brick weigh?: 2 kg
How many people does a person kiss in a lifetime?: 15 people
By about how many beats does holding hands lower the pulse?: 10 beats
How many tons of food does a person eat in a lifetime?: 60 tons
How many seconds does someone spend on a dating profile?: 6 seconds
How many relationships does a person have in a lifetime?: 7 relationships
How many times a year does the average adult catch a cold?: 3 times
How many breaths does a person take in a day?: 22,000 times
How many hairs does a person shed a day?: 100 strands
How many times do we dream in one night?: 5 times
After how many months does a couple's first fight happen?: 6 months
What daily caffeine limit in milligrams is recommended?: 400 mg
How many years does chewing gum take to break down in nature?: 5 years
At 3 o'clock, what is the angle between the hour and minute hands?: 90 degrees
How many cards are in a deck without jokers?: 52 cards
How many milligrams of caffeine are in a cup of coffee?: 95 mg
How many days is one million seconds?: 12 days
What is the sum of all numbers from 1 to 100?: 5,050
In one day, how many times do the hour and minute hands overlap?: 22 times
At most, how many Friday the 13ths can there be in one year?: 3 times
How many times a day does the average person check their phone?: 58 times
What is the most pieces you can cut a cake into with 3 straight cuts?: 8 pieces
What speed in km/h does a plane reach at take-off?: 270 km/h
How many months does it take to get over a heartbreak?: 3 months
How many million couples get married worldwide each year?: 40 million
How many centimetres tall is a standard interior door?: 200 cm
How many centimetres above the floor is a kitchen worktop?: 90 cm
How many centimetres high is a standard dining table?: 75 cm
How many centimetres high is the seat of a chair?: 45 cm
How many centimetres wide is a double bed usually?: 160 cm
How many centimetres high is one step of a staircase?: 18 cm
How many centimetres is the ceiling height in a home usually?: 250 cm
How many centimetres is the long side of a bath towel?: 140 cm
How many litres of water does a toilet use per flush?: 6 litres
How many centimetres above the floor is a door handle?: 100 cm
How many centimetres deep are kitchen cabinets?: 60 cm
How many sheets are usually on a roll of toilet paper?: 200 sheets
How many thousand hours does an LED bulb last?: 25 thousand hours
How many litres of water does a washing machine use in one wash?: 50 litres
How many litres of water does a full dishwasher load use?: 12 litres
How many calories are in one avocado?: 240 calories
How many calories are in a tablespoon of olive oil?: 120 calories
How many millilitres does a teaspoon hold?: 5 millilitres
How many millimetres long is the long side of a bank card?: 85.6 millimetres
How many minutes does pasta take to cook in boiling water?: 8 minutes
How many grams of tea are in a tea bag?: 2 grams
At how many degrees is bread baked in the oven?: 220 degrees
How many degrees should the inside of a fridge be?: 4 degrees
At how many degrees does a deep freezer run?: -18 degrees
How many mg of calcium are in a glass of milk?: 300 mg
How many grams of cheese does one litre of milk yield?: 100 grams
What percentage of a watermelon is water?: 92 %
How many grams of salt a day does the World Health Organization recommend at most?: 5 grams
How many litres of water does it take to make one pair of jeans?: 7,500 litres
Under the Laws of the Game, how many minutes can the half-time break in football last at most?: 15 minutes
How many centimetres long is a tie?: 145 cm
How many pockets does a classic pair of jeans have?: 5 pockets
How many basic symbols are there on clothing care labels?: 5 symbols
After roughly how many kilometres should running shoes be replaced?: 600 km
At how many degrees is everyday laundry usually washed?: 40 degrees
How many kilos of laundry does a washing machine hold?: 7 kg
How many millimetres apart are two consecutive European shoe sizes?: 6.7 mm
How many digits are there in a barcode?: 13 digits
Roughly how many thousand different products does a supermarket sell?: 30 thousand products
For how many minutes is a plastic bag used on average?: 12 minutes
How many days after being recycled is an aluminium can back on the shelf?: 60 days
How many years ago was the shopping trolley invented?: 90 years
How many teaspoons of sugar are in a can of fizzy drink?: 9 teaspoons
How many grams is a standard bar of chocolate?: 100 grams
How many grams is a packet of pasta?: 500 grams
How many millilitres does a standard drinks can hold?: 330 millilitres
How many minutes does an average shower last?: 8 minutes
How many minutes of toothbrushing are recommended?: 2 minutes
How many months should pass before a toothbrush is replaced?: 3 months
How many minutes later does the snooze button ring again?: 9 minutes
After how many years should a mattress be replaced?: 8 years
How many days can an egg be kept in the fridge?: 28 days
How many meals a year does someone who eats three meals a day have?: 1,095 meals
How many glasses of water a year does someone who drinks 6 a day get through?: 2,190 glasses
Working 8 hours a day over 250 working days, how many hours is that in a year?: 2,000 hours
How many times does someone who changes the sheets once a week change them in 20 years?: 1,040 times
How many hours a year does someone who spends 30 minutes getting ready each morning use up?: 183 hours
How many characters fit in a single text message at most?: 160 characters
In what year was the QR code developed?: 1,994
In what year was the wireless internet standard first published?: 1,997
Under the international rule, how many digits can a phone number have at most?: 15 digits
How many bits make up a byte?: 8 bits
In what year was the computer mouse invented?: 1,964
In what year was the QWERTY keyboard layout designed?: 1,873
How many minutes of audio fit on a music CD?: 74 minutes
How many gigabytes of data does a single layer DVD hold?: 4.7 gigabytes
How many digits does the PIN of a phone SIM card usually have?: 4 digits
How many F keys are there on the top row of a keyboard?: 12 keys
In what year was the USB standard introduced?: 1,996
How many points are there on a backgammon board?: 24 points
How many small squares are there in total on the six faces of a Rubik's Cube?: 54 squares
How many intersections are there on a Go board?: 361 intersections
In tic-tac-toe, how many different winning lines are there, counting rows, columns and diagonals?: 8 lines
From how many points do darts players count down?: 501 points
What is the highest number on one tile in a standard domino set?: 6 number
How many pawns are there in a chess set in total?: 16 pawns
In what year was the Rubik's Cube invented?: 1,974
How many clues does a sudoku need at least to have a single solution?: 17 clues
How many pieces make up a tangram puzzle?: 7 pieces
According to mathematicians, how many shuffles does it take to properly mix a deck of cards?: 7 times
How many revolutions per minute does an LP record turn at?: 33 revolutions
Roughly how many minutes of music fit on one side of an LP?: 22 minutes
How many hertz is the A that orchestras tune to?: 440 hertz
How many black keys does a piano have?: 36 keys
How many semitones is an octave divided into?: 12 semitones
How many seconds do film trailers usually last at most?: 150 seconds
How many seconds is an Oscar winner given for the thank you speech?: 45 seconds
How many minutes does a theatre interval usually last?: 15 minutes
How many frames per second were shown in the silent film era?: 16 frames
In what year were the first Oscars handed out?: 1,929
In what year was the Cannes Film Festival first held?: 1,946
How many beats does a whole note last in four four time?: 4 beats
How many players does a volleyball team have on court?: 6 players
How many seconds does a basketball team have to finish an attack?: 24 seconds
How many centimetres is the diameter of a basketball hoop?: 45 cm
How many metres is the penalty spot from the goal line in football?: 11 metres
How many metres long is a basketball court?: 28 metres
How many points does it take to win a set in table tennis?: 11 points
How many millimetres is the diameter of a table tennis ball?: 40 mm
How many minutes does a boxing round last?: 3 minutes
How many lanes are used in Olympic swimming races?: 8 lanes
How many metres from the archer is the target in Olympic archery?: 70 metres
How many centimetres wide is the balance beam in gymnastics?: 10 cm
How many centimetres high is the net in men's volleyball?: 243 cm
At roughly how many kilometres of altitude do passenger planes fly?: 11 km
Roughly how many kilometres per hour does a passenger plane cruise at?: 900 km/h
How many millimetres is the standard gauge of railway track?: 1,435 mm
How many metres is a nautical mile?: 1,852 metres
Roughly how many hours does the flight between New York and London take?: 7 hours
How many kilometres per hour does a person walk at a normal pace?: 5 km/h
How many kilometres is the longest dead straight railway line in the world?: 478 km
Roughly how many hours does a ship take to pass through the Suez Canal?: 12 hours
In how many seconds must a passenger plane be evacuated in an emergency?: 90 seconds
The pressure in an aircraft cabin matches the air at how many metres of altitude?: 2,400 metres
How many minutes are there in a day?: 1,440 minutes
How many hours are there in a year?: 8,760 hours
How many hours is one week?: 168 hours
How many leap years are there in 400 years of the Gregorian calendar?: 97 leap years
How many months of the year have 31 days?: 7 months
What is the smallest number of Fridays a year can have?: 52 Fridays
How many times a day do the hour and minute hands form a right angle?: 44 times
How many days does February have in a leap year?: 29 days
How many years is a quarter of a century?: 25 years
How many centuries is a millennium?: 10 centuries
How many numbers from 1 to 100 divide exactly by 7?: 14 numbers
How many perfect squares are there from 1 to 1000?: 31 perfect squares
The circumference of a circle is how many times its diameter?: 3.14 times
How many different outcomes are there when a coin is tossed 4 times?: 16 outcomes
How many square metres is one hectare?: 10,000 m²
How many milligrams is one carat?: 200 mg
How many months does a life of 80 years come to?: 960 months
How many litres is one barrel of oil?: 159 litres
How many grams does one litre of water weigh?: 1,000 grams
How many millilitres of liquid does a tablespoon hold?: 15 mL
How many tonnes of water does an Olympic swimming pool hold?: 2,500 tonnes
How many digits does one million have in the decimal system?: 7 digits
How many centimetres is the long side of a standard letter envelope?: 22 cm
How many square metres is a sheet of A0 paper?: 1 m²
How many sheets are there in a packet of copier paper?: 500 sheets
How many grams does one A4 sheet of 80 g/m² paper weigh?: 5 grams
How many centimetres long is a standard pencil?: 19 cm
How many sides does the body of a standard pencil have?: 6 sides
How many sheets of paper are there in a 300 page book?: 150 sheets
How many digits are written when numbering pages from 1 to 100?: 192 digits
How many red cards are there in a deck of playing cards?: 26 cards
What is the total of the dots on the six faces of a die?: 21 dots
How many different outcomes can a throw of two dice give?: 36 outcomes
How many cards are there in an Uno deck?: 108 cards
What is the total of all the numbers on a dartboard?: 210 points
How many points does a hit in the very centre of a dartboard score?: 50 points
What is the highest score a single player can get in bowling?: 300 points
How many squares are there around a Monopoly board?: 40 squares
How many blocks is a Jenga tower built from?: 54 blocks
How many letter tiles are there in a game of Scrabble?: 100 tiles
Roughly how many working days are there in a year?: 250 working days
How many seconds is one hour?: 3,600 seconds
How many days a year does someone who sleeps 8 hours a night spend asleep?: 122 days
How many is a dozen?: 12 count
How many full turns does the minute hand of a clock make in a day?: 24 revolutions
How many steps a minute does an average person take while walking?: 100 steps
How many decibels of noise does a normal conversation make?: 60 decibels
Starting with 1 grain and doubling on each chess square, how many grains on the 10th?: 512 grains
How many times a day does an average person swallow?: 600 times
At how many months old do babies start to walk on average?: 12 months
How many tiles are there in a mahjong set?: 144 tiles
What percentage of people are right handed?: 90 %
How many suspects are there in a game of Cluedo?: 6 suspects
According to the WHO, how many minutes a week should adults move at least?: 150 minutes
How many three digit numbers are there?: 900 numbers
How many glasses of water a day are commonly said to be needed?: 8 glasses
How many centimetres long is a paper clip when straightened out?: 10 cm
How many 1-litre water bottles does it take to fill an Olympic swimming pool?: 2,500,000 bottles
With a hose running 15 litres a minute, how many days does it take to fill an Olympic pool?: 116 days
How many 5 ml teaspoons does it take to fill a 150-litre bathtub?: 30,000 spoons
How many 30 cm balloons fit neatly in a room 20 m² in area and 2.5 m high?: 1,850 balloons
How many 4 cm ping-pong balls fit in a box that is 1 metre on each side?: 15,000 balls
How many 14-litre helium balloons does it take to lift a 70-kilo person off the ground?: 5,000 balloons
How many 3 cm paper clips linked end to end make a 1-kilometre chain?: 33,000 paper clips
How many metres tall is a stack of a million coins, each 2 mm thick?: 2,000 metres
How many bricks with a 20×7 cm face does a wall 10 m long and 3 m high take?: 2,100 bricks
If 1 cm sugar cubes covered a football pitch, how many million cubes would that be?: 71 million
If 1 mm of rain falls on a football pitch, how many litres of water land on it?: 7,000 litres
At 0.25 m² per person, how many million people fit in a 1 km² square?: 4 million
Everest's height equals how many 12-metre buses stacked on top of each other?: 740 buses
A 330-metre tower is how many people 1.70 m tall standing on top of each other?: 195 people
With 17 cm steps, how many steps take you to the top of a 100-metre building?: 600 digits
If a sheet of paper 0.1 mm thick could be folded 42 times, how many kilometres thick would it get?: 440,000 km
How many metres of rope do you add to raise a rope wrapped around the Earth by 1 metre everywhere?: 6.28 metres
How many kilometres does the tip of a wall clock's 10 cm minute hand travel in a year?: 5.5 km
A heart beating 70 times a minute beats how many billion times in 80 years?: 3 billion
Blinking 15 times a minute, how many blinks is that in a day spent 16 hours awake?: 14,000 times
Brushing teeth 6 minutes a day, how many days of brushing add up in 80 years?: 122 days
Driving 15,000 km a year, how many times around the Earth is that in 40 years?: 15 times
Drinking 2 litres a day, how many bathtubs (150 litres) of water is that in 80 years?: 390 bathtubs
Producing 1 kilogram of rubbish a day, how many tonnes pile up in 80 years?: 29 tons
Drinking three cups (200 ml) of coffee a day, how many litres is that in a year?: 219 litres
If 1 litre of paint covers 10 m², how many litres to paint a 100 m² wall twice?: 20 litres
How many 30×30 cm tiles does it take to floor a 100 m² home?: 1,100 tiles
Taking a 10-minute shower at 10 litres a minute, how many tonnes of water a year?: 36.5 tons
If one T-shirt takes 2,700 litres of water to make, how many tonnes do 20 T-shirts take?: 54 tons
If one egg weighs 60 grams, how many eggs make a 1-tonne pile?: 16,700 eggs
If one grain of rice weighs 0.025 grams, how many grains are in a 1-kilogram pack?: 40,000 pieces
If a cup of coffee needs 7 grams of beans, how many cups does a 1-kilo pack make?: 140 cups
If a 10-kilo watermelon is 92 percent water, how many litres of water is inside?: 9.2 litres
With 35 grams of salt per litre, how many kilograms of salt are in 150 litres of seawater?: 5 kilograms
How many times bigger is a 30 cm pizza's area than a 20 cm one's?: 2.25 times
Stacked neatly, how many 2 cm ice cubes fit in a 10-litre bucket?: 1,250 cubes
With paper at 80 grams per square metre, how many A4 sheets make 1 kilogram?: 200 sheets
If a 500-sheet pack of paper is 5 cm thick, how many sheets make a 1-metre stack?: 10,000 sheets
If 8 billion people hold hands taking 1.5 m each, how many million km long is the line?: 12 million km
Drinking one cup of coffee a day, how many litres is that in 50 years?: 3,600 litres
A million 2.5-kilo bricks fill how many trucks that carry 20 tonnes each?: 125 trucks
If a tablespoon is 15 ml, how many tablespoons are in 1 litre of olive oil?: 67 spoons
How many 330 ml soda cans does it take to fill 1 cubic metre?: 3,000 cells
Growing 1 cm a month and never cut, how many metres of hair is that in 80 years?: 9.6 metres
A washing machine using 50 litres twice a week uses how many litres a year?: 5,200 litres

Nobody knows the exact number — the closest guess wins.