1042 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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Science280 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 scent receptors does a dog have?: 300,000,000 count
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
How tall is Mount Everest in metres?: 8,849 m
How tall is K2 in metres?: 8,611 m
How long is Lake Baikal in kilometres, roughly?: 636 km
How many million square kilometres is Africa, roughly?: 30.37 million km²
How many million square kilometres is Antarctica, roughly?: 14.2 million km²
How many million square kilometres is the Mediterranean, roughly?: 2.5 million km²
How many thousand square kilometres is the Black Sea, roughly?: 436 thousand km²
How long is the Channel Tunnel in kilometres, roughly?: 50.5 km
How long is the Panama Canal in kilometres, roughly?: 82 km
How long is the Suez Canal in kilometres, roughly?: 193 km
How long is the Grand Canyon in kilometres, roughly?: 446 km
How many oceans are there on Earth?: 5 oceans
What percentage of Earth's surface is covered by water, roughly?: 71 %
What percentage of Earth's fresh water is locked in glaciers, roughly?: 69 %
In what year did the first human go to space?: 1,961 years
In what year was Dolly, the first cloned mammal, born?: 1,996 years
How many planets are there in the Solar System?: 8 planets
How many natural moons does Earth have?: 1 moons
How many natural moons does Mars have?: 2 moons
How many Earth years does one orbit of Jupiter take, roughly?: 12 years
How many Earth years does one orbit of Saturn take, roughly?: 29.5 years
How many billion years old is Earth, roughly?: 4.54 billion years
How many billion years old is the Sun, roughly?: 4.6 billion years
What is the surface temperature of the Sun in degrees, roughly?: 5,500 °C
What is the Sun's diameter in million kilometres, roughly?: 1.39 million km
What is Earth's diameter in kilometres, roughly?: 12,742 km
What is the Moon's diameter in kilometres, roughly?: 3,475 km
What is Mars's diameter in kilometres, roughly?: 6,779 km
What is Jupiter's diameter in kilometres, roughly?: 139,820 km
How many minutes does one ISS orbit of Earth take, roughly?: 90 min
How many metres per second does sound travel in air, roughly?: 343 m
At how many degrees does water freeze at sea level?: 0 °C
At how many degrees does water boil at sea level?: 100 °C
What is absolute zero in degrees Celsius, roughly?: -273.15 °C
What is the pH of pure water?: 7 pH
How many elements are in the periodic table?: 118 elements
What is the atomic number of carbon?: 6 atomic number
What is the atomic number of oxygen?: 8 atomic number
What is the atomic number of gold?: 79 atomic number
How many atoms are in a water molecule?: 3 atoms
How many chromosomes does a human normally have?: 46 chromosomes
How many pairs of chromosomes are in a human cell?: 23 pairs
How many teeth does a healthy adult normally have?: 32 teeth
How many chambers does the human heart have?: 4 chambers
How many lobes do human lungs have in total?: 5 lobes
How many millimetres is the smallest bone in the human body, roughly?: 3 mm
How many square metres is the surface area of human skin, on average?: 2 m²
How many litres of blood does an adult body hold, roughly?: 5 litres
What is the traditional reference body temperature measured by mouth, in degrees?: 37 °C
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 strands make up the DNA double helix?: 2 strands
How many bytes are in a kilobyte in binary counting?: 1,024 bytes
What is standard gravitational acceleration in m/s², roughly?: 9.81 m/s²
What is Earth's escape velocity in km per second, roughly?: 11.2 km/s
How many million kilometres is one astronomical unit, roughly?: 149.6 million km
How many trillion kilometres is one light year, roughly?: 9.46 trillion km
What percentage of Earth's atmosphere is nitrogen, roughly?: 78 %
What percentage of Earth's atmosphere is oxygen, roughly?: 21 %
The Moon's gravity is what percentage of Earth's, roughly?: 16.5 %
How many arms does a starfish usually have?: 5 arms
How many vertebrae are in a giraffe's neck?: 7 vertebrae
How many degrees can an owl turn its head, roughly?: 270 degrees
How many teeth does an adult dog usually have?: 42 teeth
How many teeth does an adult cat usually have?: 30 teeth
How many thousand muscles are in an elephant's trunk, roughly?: 40 thousand muscles
How fast can a polar bear run in km/h, roughly?: 40 km/h
How fast can an ostrich run in km/h, roughly?: 70 km/h
How fast can a kangaroo hop in km/h, roughly?: 70 km/h
How many minutes can an emperor penguin stay underwater, roughly?: 20 min
How many minutes can a dolphin hold its breath, roughly?: 10 min
How many metres deep can a sperm whale dive, roughly?: 2,000 m
How many metres can an albatross's wingspan reach, roughly?: 3.5 m
How many metres can a bald eagle's wingspan reach, roughly?: 2.3 m
How many times per second does a bee beat its wings, roughly?: 230 times
How many times per second does a housefly beat its wings, roughly?: 200 times
How many seconds does a cheetah need to reach 100 km/h, roughly?: 3 sec
How many hours a day does a sloth sleep, roughly?: 15 hours
How many hours a day does a koala sleep, roughly?: 20 hours
How many hours a day does a lion rest or sleep, roughly?: 20 hours
How many kilograms of bamboo can a panda eat a day, roughly?: 12 kg
How many litres of water can an adult elephant drink a day, roughly?: 200 litres
How many litres of water can a cow drink a day, roughly?: 100 litres
How many times per minute can a hummingbird's heart beat in flight, roughly?: 1,200 shots
How many kilograms does a blue whale's heart weigh, roughly?: 180 kg
How many centimetres long is an ostrich egg, roughly?: 15 cm
How many centimetres of fat can a polar bear have, roughly?: 10 cm
How many times its body length can a chameleon extend its tongue?: 2 floors
How many times its own length can a flea jump, roughly?: 200 floors
How many centimetres tall does an emperor penguin get, roughly?: 120 cm
How many years can a gorilla live, roughly?: 40 years
How many years can an African elephant live, roughly?: 70 years
How many years can a Greenland shark live, roughly?: 400 years
How many years can a queen bee live, roughly?: 5 years
How many weeks does a worker bee live in summer, roughly?: 6 weeks
How many days does a chicken egg take to hatch?: 21 days
How many days does an emperor penguin egg take to hatch, roughly?: 65 days
How many days does a dog's pregnancy last on average?: 63 days
How many days does a cat's pregnancy last on average?: 65 days
How long is the Kızılırmak, Türkiye's longest river, in kilometres?: 1,355 km
How long is the Euphrates in total, in kilometres?: 2,800 km
How many square kilometres is Lake Tuz, roughly?: 1,665 km²
How many square kilometres is Lake Beyşehir, roughly?: 656 km²
How tall is Mount Uludağ in metres?: 2,543 m
How many kilometres long is Pınargözü, one of Türkiye's longest caves?: 16 km
From how many metres does the lower Düden Waterfall drop into the sea?: 40 m
How long is the 15 July Martyrs Bridge in Istanbul, in metres?: 1,560 m
How long is the Fatih Sultan Mehmet Bridge in metres?: 1,510 m
How long is the Yavuz Sultan Selim Bridge in metres?: 2,164 m
What is the main span of the 1915 Çanakkale Bridge in metres?: 2,023 m
How long is the Eurasia Tunnel in kilometres, roughly?: 14.6 km
How many kilometres is the undersea section of Marmaray, roughly?: 1.4 km
How many metres tall are the travertine terraces of Pamukkale, roughly?: 160 m
How many cells are there in a sudoku grid?: 81 cells
How many billion stars are in the Milky Way?: 200 billion
How many tons of space dust fall to Earth each day?: 100 tons
How many kilograms of food does an elephant eat per day?: 150 kg
How many million km² is Greenland?: 2.16 million km²
About how many tonnes of water does a medium cumulus cloud hold?: 500 tons
How many million times does a person blink in a lifetime?: 400 million
How hot does a lightning bolt get in °C?: 30,000 °C
How many years does a person spend sleeping in a lifetime?: 26 years
How tall can a giraffe get in metres?: 5.5 m
According to research, how many people's faces can a person recognise on average?: 5,000 people
In a 2007 US study of 396 people, how many words did a person speak per day on average?: 16,000 words
How many thousand km² is the Caspian Sea?: 371 thousand km²
According to scientific estimates, how many million animal species exist on Earth?: 7.7 million
How many quadrillion ants are estimated to live on Earth?: 20 quadrillion
How deep is Lake Baikal in metres?: 1,642 m
How many trillion trees are there on Earth?: 3 trillion
How many babies are born per minute worldwide?: 250 babies
According to a 2016 Hubble-based study, how many trillion galaxies are in the observable universe?: 2 trillion
How many million Earths would fit inside the Sun?: 1.3 million
How many thousand litres of water does a person drink in a lifetime?: 75 thousand litres
How many kilometres of blood vessels are in the human body?: 100,000 km
How many billion neurons are in the human brain?: 86 billion
How many trillion bacteria live in the human body?: 39 trillion
According to research, in how many milliseconds does a first impression of a face form?: 100 ms
About how many grams of skin cells does a person shed in a year?: 500 grams
According to a study, how many billion bacteria can live in one cubic centimetre of kitchen sponge?: 54 billion
Assuming 1.5 kg a day for 80 years, how many tonnes of food does a person eat in a lifetime?: 43.8 tonnes
On an average night, how many minutes of REM sleep does a person get in total?: 100 min
Assuming 15 blinks a minute over 16 waking hours, how many times does a person blink per day?: 14,400 times
Assuming 15 minutes a day for 80 years, how many days does a person spend on the toilet?: 304 days
By water-footprint calculations, how many litres of water does one cup of coffee cost?: 140 litres
About how many litres of saliva does an adult produce per day?: 1.5 litres
According to a study, how many hours together does it take for an acquaintance to become a close friend?: 200 hours
By water-footprint calculations, how many litres of water does producing one hamburger take?: 2,400 litres
According to a study, how many days on average does a new habit take to become automatic?: 66 days
According to medical sources, how many times a day does a healthy adult pass gas on average?: 14 times
According to research, how many minutes does it take to return to a task after an interruption?: 23 min
According to Dunbar's model, about how many stable social relationships can a person maintain?: 150 relationships
Rolling a fair six-sided die four times, what percentage chance is there of getting at least one six?: 51.8 %
Talking 30 minutes a day, how many days until two people reach 200 hours in total?: 400 days
With 23 people in a room, what percentage chance is there that at least two share a birthday?: 50.7 %
Losing five minutes every day equals how many full days over 80 years?: 101 days
Folded in half 42 times, how many kilometres thick would a 0.1 mm sheet of paper become?: 440,000 km
Breathing 15 times a minute, how many breaths does a person take in a day?: 21,600 breaths
Growing 1% a day, how many times its starting value does an amount reach after 365 days?: 37.8 times
About how many centimetres does an average hair grow in a month?: 1.2 cm
About how many million air sacs are there in an adult's lungs?: 300 million
With 50 people in a room, what percentage chance is there that at least two share a birthday?: 97 %
Two hours a week with each of five close friends adds up to how many hours a year?: 520 hours
The brain is just 2% of body weight — what percentage of the body's energy does it use?: 20 %
About how many people can a person's wider circle of acquaintances reach?: 500 people
How many seconds does sunlight take to reach Earth?: 500 sec
How many seconds does light take to cross the average distance from Earth to the Moon?: 1.28 sec
Meeting four times a year for three hours, how many years until two friends reach 200 hours?: 17 years
Assuming 70 kg and 60% water, how many litres of water are in an adult's body?: 42 litres
Drinking two litres of water a day adds up to how many thousand litres over 80 years?: 58.4 thousand litres
Meeting 10 hours a week, how many weeks until two people reach the 200 hours of close friendship?: 20 weeks
How many people are usually in the innermost circle of someone's social network?: 5 people
About how many millimetres do fingernails grow in a month?: 3 mm
Tossing a fair coin 10 times, what percentage chance is there that every toss lands the same side?: 0.2 %
Spending one hour a year with each person in a 150-person circle takes how many hours in total?: 150 hours
A habit that saves just one second a day saves how many minutes in a year?: 6.1 min
Walking 10,000 steps a day adds up to how many million steps a year?: 3.65 million steps
How many kernels are on a corn cob?: 800 pieces
How many times more sensitive is a dog's nose than a human's?: 10,000 times
The human eye is equal to a camera of how many megapixels?: 576 megapixels
How many calories does the brain burn in a day?: 300 calories
How many grams can a single hair hold?: 100 grams
How many times stronger than steel of the same thickness is spider silk?: 5 times
How many teeth does a shark go through in its lifetime?: 30,000 teeth
How many hours can a crocodile stay underwater?: 2 hours
How many metres does a kangaroo cover in one hop?: 9 metres
How many times its own length can a flea jump?: 100 times
How many years does a cicada wait underground?: 17 years
How many months does a bear sleep in hibernation?: 6 months
How many kilos can an eagle's nest weigh?: 1,000 kg
How many nerve endings are in a fingertip?: 3,000 nerve endings
How many eyelashes does one eye have?: 150 eyelashes
How many suckers are on an octopus's arms in total?: 2,000 suckers
How many times stronger is a pig's sense of smell than a human's?: 2,000 times
How many pores are in an eggshell?: 7,000 pores
How many seeds are in the centre of a sunflower?: 1,500 seeds
How many seeds are inside a pomegranate?: 600 pieces
How many years can an olive tree live?: 500 years
How many years can a sequoia live?: 3,000 years
How many coconuts does a coconut palm bear in a year?: 75 fruits
How many grams of honey does one bee make in its lifetime?: 1 grams
How many thousand ants live in one colony?: 250 thousand
What percent of a firefly's light is lost as heat?: 2 percent
How many days does a turtle egg take to hatch?: 60 days
How many kilos of carbon dioxide does a tree absorb in a year?: 22 kg
How many days does a butterfly live on average?: 14 days
For how many seconds can a cheetah run at full speed?: 30 seconds
How many eggs does a hen lay in a year?: 300 eggs
How many quills does a hedgehog have?: 5,000 quills
How many litres of blood does the heart pump in a day?: 7,500 litres
How many of the human body's bones are in the feet?: 52 bones
How many insects can a bat eat in an hour?: 1,000 insects
From how many kilometres away can an eagle spot its prey?: 3 km
How many kilos of skin does a person shed in a lifetime?: 35 kg
How many times a minute does a blue whale's heart beat?: 8 times
How many times a minute does a hummingbird's heart beat?: 1,200 times
How many tons does an average cloud weigh?: 500 tons
How many different words can a dog tell apart?: 165 words
How many metres does a snail travel in an hour?: 3 metres
How many flowers do bees visit for one jar of honey?: 2,000,000 flowers
How many degrees does a lightning bolt heat up to?: 30,000 degrees
How many times a year does a snake shed its skin?: 4 times
How many brains does an octopus have?: 9 brains
How many eyes does a starfish have?: 5 eyes
How many stomachs does a cow have?: 4 stomachs
How many km/h does a penguin swim?: 10 km/h
How many months does it take to get over a breakup on average?: 3 months
By what percentage do serotonin levels drop in people who are in love?: 40 %
What percentage of the day does a newly in-love person spend thinking about their partner?: 85 %
According to the famous experiment, how many minutes should two strangers look into each other's eyes to increase their chances of falling in love?: 4 min
How many months does the initial excitement of love, the 'butterflies in your stomach' feeling, last on average?: 18 months
How many times per minute does your heart beat when you see your crush?: 100 times
How many minutes does it take for the heartbeats of hand-holding lovers to sync up?: 3 min
What percentage of people tilt their head to the right when kissing?: 65 %
How many million bacteria are exchanged between two people during a 10-second kiss?: 80 million
How many seconds does it take to decide if you like someone on a first date?: 3 seconds
How many seconds does an average hug between couples last?: 3 seconds

Culture243 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
How many different combinations does a Rubik's Cube have?: 43,000,000,000,000,000,000 combinations
According to Boeing, how many million parts make up a 747?: 6 million parts
How many metres is a marathon?: 42,195 m
How many million square kilometres is Canada, roughly?: 9.98 million km²
How many countries does the Equator pass through?: 13 countries
How many continents are there on Earth?: 7 continents
How many UN member countries are there in Africa?: 54 countries
How many independent countries are there in South America?: 12 countries
How many provinces are there in Türkiye?: 81 provinces
How many countries share a land border with Türkiye?: 8 countries
How many metres above sea level is Sumela Monastery, roughly?: 1,200 m
How tall is the Galata Tower in metres, roughly?: 63 m
How long is the Lycian Way in kilometres, roughly?: 540 km
How many minutes is a football match in regular time?: 90 min
How many minutes is an ice hockey game in regular time?: 60 min
How many metres long is an Olympic swimming pool?: 50 m
How many metres long is a tennis court, roughly?: 23.77 m
How many metres above the floor is a basketball hoop?: 3.05 m
How many metres wide is a football goal?: 7.32 m
How many metres high is a football goal?: 2.44 m
How many metres is one lap of an Olympic athletics track?: 400 m
How many rings are on the Olympic flag?: 5 rings
How many tiles are in a standard set of dominoes?: 28 pieces
How many pieces are in a backgammon set in total?: 30 pieces
How many pins are used in bowling?: 10 pins
How many balls are used in standard American pool?: 16 balls
How many strings does a classical harp have, roughly?: 47 strings
How many centimetres tall is the Mona Lisa painting?: 77 cm
How many metres tall is Michelangelo's David, roughly?: 5.17 m
How many million people celebrate a birthday each day?: 21 million
Based on 2024 data, about how many thousand commercial flights take place worldwide each day?: 100 thousand
Based on UNESCO data, how many million new book titles are published worldwide each year?: 2.2 million
How tall is the Leaning Tower of Pisa in metres?: 56 m
What top speed in km/h can a Formula 1 car reach?: 350 km/h
According to industry estimates, how many billion cups of coffee are drunk worldwide each day?: 2.25 billion
How tall is the Eiffel Tower in metres?: 330 m
According to 2023 estimates, how many billion photos are taken worldwide each day?: 5.3 billion
How many million tons of chocolate are eaten worldwide per year?: 7.5 million tons
According to industry estimates, how many billion cups of tea are drunk worldwide each day?: 3 billion
How many metres long is the standard pitch used in international football matches?: 105 m
According to 2024 estimates, how many million emails are sent worldwide every minute?: 250 million
According to 2024 counts, how many billion registered websites are there on the internet?: 1.1 billion
According to 2023 estimates, how many billion Google searches are made worldwide each day?: 8.5 billion
According to YouTube's 2022 figure, how many hours of video were uploaded every minute?: 500 hours
According to a 2019 US survey, how many times a day does a person check their phone on average?: 96 times
How many million kilometres of roads are there on Earth?: 64 million km
How many countries are there in the world?: 195 countries
According to 2024 data, how many hours a day does a person spend online on average?: 6.7 hours
According to the UN's 2024 report, how many kilograms of food does a person waste at home each year?: 79 kg
According to Eurostat, how many kilograms of packaging waste per person are generated in the EU each year?: 190 kg
According to 2024 data, how many minutes a day does a person spend on social media on average?: 143 min
Thirty minutes of cooking a day adds up to how many full days over 40 years?: 304 days
Drinking one 1.5-litre bottle of water a day uses how many bottles a year?: 365 bottles
Ordering food five times a week adds up to how many orders a year?: 260 orders
Checking your phone 100 times a day adds up to how many times a year?: 36,500 times
Thirty minutes of social media a day equals how many full days over 20 years?: 152 days
Ten minutes a day clearing junk email adds up to how many hours a year?: 61 hours
Two hours of grocery shopping a week equals how many full days over 50 years?: 217 days
Sending 50 messages a day, how many messages is that in 10 years?: 182,500 messages
Two hours at the hairdresser once a month adds up to how many full days over 60 years?: 60 days
With a tap running 6 litres a minute, how many litres go down the drain in a two-minute brush?: 12 litres
Typing 40 words a minute, how many minutes to write a 1,000-word text?: 25 min
Snoozing in bed 10 minutes every morning adds up to how many full days over 20 years?: 51 days
Twenty minutes of reading the news a day adds up to how many full days over 30 years?: 152 days
Wearing headphones 2 hours a day equals how many full days over 10 years?: 304 days
Working out 45 minutes three times a week adds up to how many full days over 10 years?: 49 days
A 15-minute coffee break a day, 250 workdays a year, adds up to how many full days over 40 years?: 104 days
A washing machine run four times a week runs how many times a year?: 208 times
Playing 90 minutes of online games a day equals how many full days over 10 years?: 228 days
A 10-minute shower every day adds up to how many full days over 50 years?: 127 days
At 4 hours of screen time a day, how many years of a 50-year span are spent looking at screens?: 8.3 years
Five minutes a day hunting for passwords takes how many hours a year?: 30 hours
Spending 15 minutes a day deciding what to watch costs how many hours a year?: 91 hours
A fridge using 1 kilowatt-hour a day consumes how many kilowatt-hours a year?: 365 kWh
Watching 3 hours of video a day uses up how many full days in a year?: 46 days
Fifteen minutes a day looking for keys or lost things adds up to how many full days over 20 years?: 76 days
Five hours of series a week adds up to how many full days over 20 years?: 217 days
One hour of commuting a day, 250 workdays a year, adds up to how many full days over 40 years?: 417 days
A shower running 9 litres a minute uses how many litres in 8 minutes?: 72 litres
Two cups of coffee a day adds up to how many cups a year?: 730 cups
Unlocking your phone 80 times a day adds up to how many unlocks a year?: 29,200 times
Reading 200 words a minute, how many hours to finish a 300-page book with 300 words per page?: 7.5 hours
A 10-watt bulb on for five hours a day uses how many kilowatt-hours a year?: 18.25 kWh
A family throwing away three loaves a week wastes how many loaves a year?: 156 loaves
Forty-five minutes of eating a day adds up to how many years over a lifetime of 80?: 2.5 years
Four cups a day at 200 ml each adds up to how many litres of tea a day?: 0.8 litres
Three hours of cleaning the house a week adds up to how many full days over 50 years?: 325 days
Twenty minutes of waiting in line a day adds up to how many full days over 40 years?: 203 days
Brushing your teeth twice a day for two minutes adds up to how many full days over 80 years?: 81 days
If refocusing takes 20 minutes and there are three interruptions a day, how many hours are lost per year?: 365 hours
Twenty minutes on the phone in bed each night equals how many full days over 10 years?: 51 days
On average, how many words does a book contain?: 80,000 words
How many museums are there in the world?: 100,000 museums
How many strings does a violin have?: 4 strings
Roughly how many musicians play in a symphony orchestra?: 80 musicians
How many keys does a piano have?: 88 keys
How many strings does a classical guitar have?: 6 strings
On average, how many moves does a chess game last?: 40 moves
How many minutes long is a basketball game?: 40 minutes
How many points wins a volleyball set?: 25 points
How many games do you need to win a set in tennis?: 6 games
How many innings does a baseball game have?: 9 innings
How many holes does a golf course have?: 18 holes
How many players are on a cricket team?: 11 players
How many players from a rugby team are on the field?: 15 players
How many kilometres is the Olympic marathon?: 42 km
How many days does the Tour de France last?: 23 days
How many races are there in a Formula 1 season?: 24 races
What is the maximum length of a football pitch in metres?: 105 metres
How many sports are in the Olympic Games?: 32 sports
How many hours does a round-the-world flight take?: 40 hours
How many different currencies are used in the world?: 180 currencies
How many member countries does the European Union have?: 27 countries
How many official languages does the European Union have?: 24 languages
How many official languages does the United Nations have?: 6 languages
How many time zones are there in the world?: 24 time zones
How many films are made worldwide in a year?: 12,000 films
On average, how many minutes does a feature film run?: 110 minutes
On average, how many frames does a feature film contain?: 158,000 frames
How many words a minute does an average person read?: 240 words
How many words a minute does an average person speak?: 130 words
Roughly how many words are enough to speak a language?: 3,000 words
Roughly how many words are in an English dictionary?: 170,000 words
How many million people speak the world's most-spoken language?: 1,500 million
How many alphabets are in use in the world?: 45 alphabets
How many emojis are defined in the emoji standard?: 3,800 emojis
How many cups of coffee are drunk worldwide each day?: 2 billion
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 thousand cups of coffee does a person drink in a lifetime?: 20 thousand
How many UNESCO World Heritage sites are there?: 1,200 sites
In how many languages does the largest library hold works?: 470 languages
How many different kinds of cheese are there in the world?: 1,800 varieties
How many billion photos are taken worldwide in a year?: 1,900 billion
How many million people use music streaming services worldwide?: 700 million
On average, how many seconds does a song last?: 200 seconds
How many different writing systems are in use in the world?: 290 writing systems
How many million books are published worldwide in a year?: 2 million
How many teams take part in the World Cup?: 48 teams
How many leather panels are stitched into a football?: 32 pieces
How many dimples are on a golf ball?: 336 dimples
How many spokes are in a bicycle wheel?: 32 strands
How many studs are on a standard Lego brick?: 8 studs
How many words can one ballpoint pen write?: 45,000 words
How many metres of line can one pencil draw?: 50,000 metres
How many square metres of wall does one tin of paint cover?: 40 m²
How many cells are filled in a sudoku?: 81 cells
In how many moves at most can a Rubik's Cube be solved?: 20 moves
How many horsehairs are in a violin bow?: 160 hairs
How many movements does a symphony have?: 4 movements
How many hours does an opera last on average?: 3 hours
How many minutes long can a Eurovision song be at most?: 3 minutes
How many grams does an Olympic medal weigh?: 550 grams
How many thousand steps does a marathon runner take in a race?: 55 thousand
How many decibels can a stadium crowd reach?: 130 decibels
How many thousand parts are in a car?: 30 thousand
How many kilometres of wiring are in a passenger plane?: 500 km
How many parts are inside a mobile phone?: 1,000 pieces
How many hours does finishing a jigsaw take on average?: 5 hours
How many pieces are in a drum kit?: 5 pieces
How many minutes does a circus show last on average?: 120 minutes
How many jumps does a ballet dancer make in one show?: 200 times
How many episodes does a season have on average?: 10 episodes
How many days does filming a movie take on average?: 60 days
How many seconds does a TV commercial run on average?: 30 seconds
How many photos are shot on average for one magazine cover?: 500 photos
How many minutes does one lot take to sell at an auction?: 2 minutes
How many books fit on a library shelf on average?: 30 books
How many names appear in a film's end credits?: 1,500 names
How many frames per second does an animated film show?: 24 frames
How many times does a conductor raise their hand in one concert?: 3,000 times
How many keys are on a computer keyboard?: 104 keys
How many grapes go into one bottle of wine?: 600 pieces
How many coffee beans are ground for one cup of coffee?: 70 beans
How many crisps are in a bag on average?: 45 crisps
How many slices is a pizza cut into?: 8 segments
How many Lego pieces are made every second worldwide?: 1,100 pieces
How many minutes does a stage play last on average?: 120 minutes
How many minutes does a stand-up show last on average?: 60 minutes
How many thousand people run in a big marathon?: 40 thousand
How many seconds does a Formula 1 pit stop take?: 2 seconds
In a football match, how many minutes is the ball actually in play?: 55 minutes
How many houses come in a Monopoly box?: 32 houses
How many seats does a cinema screen have on average?: 200 seats
How many hours of video are uploaded to the internet every minute?: 500 hours
How many kilos does an Oscar statuette weigh?: 4 kg
How many seconds do visitors spend in front of the Mona Lisa on average?: 15 seconds
How many balls are on a pool table?: 16 balls
How many segments is a dartboard divided into?: 20 segments
How many pins are set up in a bowling lane?: 10 pins
How many minutes does a TV episode last on average?: 42 minutes
How many pages does a book have on average?: 320 pages
How many songs does an album have on average?: 12 songs
How many words are on a newspaper page on average?: 1,000 words
How many puzzles are in a puzzle magazine on average?: 40 puzzles
How many cities does a concert tour visit on average?: 30 cities
How many times does the average person say they've been in love in their lifetime?: 3 times
How many months in advance does the average person plan a marriage proposal?: 3 months
How many months' salary is traditionally expected to be spent on an engagement ring?: 2 months
How many million people use dating apps worldwide?: 350 million
How many days does the love story of Romeo and Juliet actually last?: 4 days
After how many months do couples typically move in together?: 18 months
How many days after love at first sight do Romeo and Juliet get married?: 1 days
On average, how many years after divorce do people remarry?: 4 years
How many texts does the average person send their partner per day?: 25 texts
How long does an average wedding ceremony last?: 30 min
Approximately how many thousand couples get married in a day worldwide?: 110 thousand couples
What percentage of people admit to secretly checking their partner's phone?: 30 %
What's the average age of first marriage worldwide?: 28 years
What percentage of Valentine's Day cards are bought by women?: 85 %
How many billion cards are sent worldwide on Valentine's Day?: 1 billion
What percentage of profiles do women swipe right on in dating apps?: 14 percent
What percentage of profiles do guys swipe right on in dating apps?: 46 percent
How many questions are in the famous '36 Questions to Fall in Love' list?: 36 questions
How many weeks in advance are wedding invitations typically sent out?: 8 weeks
How many months does the average couple spend planning their wedding?: 12 months
On average, which date does the first kiss happen in a relationship?: 2 date
How many days does an average wedding celebration last in India?: 3 days
How many million marriages take place in China each year?: 7 million
What anniversary is the 'golden wedding anniversary'?: 50 years
What percentage of couples started out as friends first?: 66 %
What percentage of married couples in the US met online?: 40 %
At what age do people have their first kiss on average?: 15 years
How long does the couple's first dance at a wedding typically last?: 3 min
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
How many million boxes of heart-shaped chocolates are sold on Valentine's Day?: 36 million
How many guests attend the average wedding?: 130 people
How many days does the average honeymoon last?: 7 days
How many million roses are sold worldwide on Valentine's Day?: 250 million
On average, how many times a week do married couples argue?: 3 times
How many months does the average couple date before making it official?: 2 months
What percentage of marriages worldwide are arranged?: 55 %
On average, how many weeks pass between visits for long-distance couples?: 3 weeks

Records190 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 oxygen, in minutes?: 24.6 min
What is the 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 tall is Angel Falls, the world's highest waterfall, in metres?: 979 m
How many kilometres wide is the Sahara from east to west, roughly?: 4,800 km
How many tons did the heaviest recorded blue whale weigh?: 190 tons
How many hours did the longest tennis match last?: 11 hours
What is the capacity of Rungrado in Pyongyang, the world's largest stadium?: 114,000 people
How long is the world's largest cruise ship in metres?: 365 m
How many years has the longest-running radio show been on air?: 74 years
How many minutes is the marathon world record?: 120 minutes
How many metres deep is the world's deepest swimming pool?: 60 metres
How many kilometres long is the world's longest rail tunnel?: 57 km
How many kilometres long is the world's longest road tunnel?: 24 km
How many kilometres long is the world's longest undersea tunnel?: 54 km
How many metres is the world's tallest roller coaster drop?: 139 metres
How many metres was the wingspan of the An-225, the largest plane?: 88 metres
How many hours does the longest scheduled flight take?: 19 hours
For how many million dollars did the priciest painting sell?: 450 million
How many million copies has the best-selling album sold?: 70 million
How many awards did the film with the most Oscars win?: 11 awards
How many awards did the person with the most Oscars win?: 22 awards
How many carats was the largest rough diamond ever found?: 3,106 carats
How many metres is the highest commercial bungee jump?: 233 metres
How many seconds did the longest-flying paper plane stay up?: 29 seconds
How many metres did the farthest-flying paper plane travel?: 88 metres
How many hoops is the record for spinning hula hoops at once?: 200 hoops
How many million books are in the world's largest library?: 25 million
How many million visitors a year does the most-visited museum get?: 9 million
How old was the oldest tortoise ever recorded?: 188 years old
How old is the oldest known tree?: 4,800 years old
How many metres tall is the world's tallest tree?: 116 metres
How many metres across is the trunk of the world's thickest tree?: 11 metres
How many centimetres across is Rafflesia, the largest flower?: 100 cm
How many square kilometres is the world's largest fungus?: 9 km²
How many metres deep does the deepest-diving mammal go?: 2,992 metres
How many thousand kilometres a year does the longest-migrating bird fly?: 70 thousand km
How many metres was the biggest wave ever recorded?: 524 metres
How many metres was the biggest wave ever surfed?: 26 metres
How many degrees is the highest temperature measured on Earth?: 56 degrees
What magnitude was the strongest earthquake ever recorded?: 9 magnitude
How many years has the underground coal fire in Centralia burned?: 60 years
How many thousand square kilometres was the largest iceberg recorded?: 11 thousand km²
How many hours is the record for the longest non-stop speech?: 124 hours
How many hours is the record for watching TV the longest?: 94 hours
How many hours is the record for dancing the longest?: 126 hours
How many million people attended the largest concert on record?: 3 million
From how many kilometres up was the highest-altitude jump made?: 41 km
How many days did the person with the longest single spaceflight stay up?: 437 days
How many times did the person with the most spacewalks go outside?: 16 times
How many minutes is the static apnea breath-hold record without oxygen?: 11 minutes
How many metres is the deepest free dive?: 214 metres
How many words per minute could the fastest typist type?: 216 words
From how many metres was the longest basketball shot made?: 34 metres
How many metres is the longest golf drive?: 471 metres
How many hours is the record for keeping a ball up (freestyle)?: 24 hours
How many seconds is the 100 m freestyle swimming world record?: 46 seconds
How many centimetres is the high jump world record?: 245 cm
How many centimetres is the long jump world record?: 895 cm
How many centimetres is the pole vault world record?: 626 cm
How many metres is the shot put world record?: 23 metres
How many metres is the javelin world record?: 98 metres
How many kilos is the heaviest weightlifting lift?: 264 kg
How many kilos is the deadlift record?: 501 kg
How old was the oldest person to run a marathon?: 101 years old
How old was the oldest person to summit Everest?: 80 years old
How many times did the person with the most Everest climbs reach the top?: 30 times
How many hours did the fastest Everest ascent take?: 11 hours
How many years did the record walk around the world take?: 4 years
How many days is the record for cycling around the world?: 78 days
How many metres tall was the biggest snowman?: 37 metres
How many metres tall was the biggest sandcastle?: 21 metres
How many pieces did the biggest jigsaw puzzle have?: 54,000 pieces
How many metres tall is the tallest Lego tower?: 36 metres
How many metres long is the world's longest bicycle?: 41 metres
How many metres long is the world's longest limousine?: 30 metres
How many metres tall is the world's largest land vehicle?: 96 metres
How many tonnes can the biggest mining truck carry?: 450 tons
How many tonnes can the strongest crane lift?: 5,000 tons
How many metres up is the world's highest observation deck?: 555 metres
How many metres per second does the world's fastest lift travel?: 21 metres
How many kilometres long is the world's longest cable car line?: 32 km
How many years has the longest continuously burning light bulb been on?: 124 years
How many years has the longest-operating spacecraft been working?: 48 years
How many metres across is the world's largest radio telescope?: 500 metres
How many million litres does the world's largest aquarium hold?: 49 million
How many metres long is the world's longest swimming pool?: 1,013 metres
How many hours is the record for standing still the longest?: 17 hours
How many hot dogs is the record for eating in one minute?: 10 pieces
How many hot dogs is the record for eating in ten minutes?: 76 pieces
How many square metres was the biggest pizza?: 1,296 m²
How many metres long was the longest cake?: 6,500 metres
How many tonnes did the biggest birthday cake weigh?: 58 tons
For how many thousand dollars did the priciest meal sell?: 25 thousand
How many tonnes did the biggest chocolate bar weigh?: 12 tons
How many metres long was the longest strand of spaghetti?: 455 metres
How many litres did the biggest mug hold?: 4,600 litres
How many days does the world's longest train journey take?: 8 days
How many thousand kilometres is the longest continuous rail line?: 9 thousand km
Into how many languages has the most-translated book been translated?: 700 languages
How many pairs is the largest sock collection owned by one person?: 750 pairs
In how many seconds does the fastest animal run 100 metres?: 6 seconds
How many km/h does the fastest roller coaster reach?: 240 km/h
How many km/h does the world's fastest production car do?: 490 km/h
How many km/h does the peregrine falcon hit in a dive?: 389 km/h
What is the top speed reached in free fall, in km/h?: 1,357 km/h
How many km/h is the fastest tennis serve?: 263 km/h
How many km/h is the fastest football shot?: 210 km/h
How many decibels is the loudest shout record?: 129 decibels
How many T-shirts is the record for wearing at once?: 260 pieces
How many hours is the longest hula hooping record?: 100 hours
How many hours is the longest continuous singing record?: 105 hours
How many balls is the juggling record for keeping in the air?: 11 balls
How many thousand tiles made up the longest domino chain?: 4,500 thousand
How many seconds is the fastest 100 m run backwards?: 13 seconds
How many skips is the jump rope record in one minute?: 348 times
How many hours is the longest plank record?: 9 hours
How many countries has the most-travelled person visited?: 196 countries
How many seconds is the record for eating a chocolate bar?: 25 seconds
How many thousand people joined the biggest snowball fight?: 8 thousand
How many hours is the longest smiling record?: 10 hours
How many names did the person who memorised the most names recall?: 200 names
How many digits of pi is the record for reciting from memory?: 70,000 digits
How many words a minute does the fastest reader read?: 4,000 words
How many thousand people did yoga together at the largest session?: 100 thousand
How many people toppled in the biggest human domino?: 10,000 people
How many minutes did the longest standing ovation last?: 80 minutes
How many balloon animals did the record-holder make in an hour?: 747 pieces
How many grapes is the record for eating in one minute?: 73 pieces
How many hours did the record-holder stand on one foot?: 76 hours
How many spoons is the record for balancing at once?: 85 spoons
How many centimetres tall was the tallest person ever?: 272 cm
How old was the longest-living person?: 122 years old
What is the largest known shoe size?: 60 shoe size
How many centimetres are the longest legs?: 135 cm
How many centimetres is the longest tongue?: 10 cm
How many words a minute does the fastest talker say?: 640 words
How many marathons has the person with the most completed?: 1,000 marathons
How many hours is the longest kite-flying record?: 180 hours
How many metres long was the longest sandwich?: 700 metres
How many kilos did the biggest burger weigh?: 1,100 kg
How many metres tall was the biggest ice cream cone?: 3 metres
How many thousand people were in the biggest football crowd?: 199 thousand
For how many million dollars did the priciest car sell?: 143 million
For how many million dollars did the priciest shoes sell?: 17 million
How many thousand fireworks were set off in the biggest display?: 810 thousand
How many kilometres long was the longest traffic jam on record?: 200 km
How many days did the longest traffic jam on record last?: 12 days
How many kilometres deep is the deepest human-made hole?: 12 km
How many kilometres is the longest glider flight?: 3,000 km
How many metres tall was the biggest sand sculpture?: 22 metres
How many marshmallows is the record for eating in one minute?: 25 pieces
How many people were in the largest selfie ever taken?: 1,150 people
How many hours did the longest non-stop run last?: 80 hours
How many metres wide was the biggest book?: 8 metres
How many millimetres is the smallest book?: 1 mm
How many languages did the person who knew the most speak?: 58 languages
How many years did the person with the longest career in one job work?: 84 years
How many centimetres are the longest fingernails?: 130 cm
How many metres is the longest beard?: 5 metres
How many thousand people joined the biggest pillow fight?: 6 thousand
How many hours did the longest kiss last?: 58 hours
How many times did the person with the most marriages in history get married?: 29 times
How many years did the world's longest engagement last?: 67 years
How many thousand people kissed at the largest simultaneous kissing event?: 40 thousand
What's the world record for the longest marriage in years?: 86 years

History200 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 win the right to vote in Turkey?: 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
In what year was Istanbul conquered?: 1,453 years
In what year was the Republic of Türkiye proclaimed?: 1,923 years
In what year did the French Revolution begin?: 1,789 years
In what year was the US Declaration of Independence adopted?: 1,776 years
In what year did Columbus reach the Americas?: 1,492 years
In what year did the Second World War begin?: 1,939 years
In what year did the Second World War end?: 1,945 years
In what year did the Soviet Union dissolve?: 1,991 years
In what year did the Chernobyl disaster happen?: 1,986 years
In what year was YouTube founded?: 2,005 years
In what year was Google founded?: 1,998 years
In what year was the first successful powered flight?: 1,903 years
In what year did the first PlayStation go on sale?: 1,994 years
In what year did the first Xbox go on sale?: 2,001 years
In what year did the Vesuvius eruption bury Pompeii?: 79 years
In what year did the Turkish Grand National Assembly open?: 1,920 years
In what year did Türkiye adopt the Latin alphabet?: 1,928 years
How many years old is Göbeklitepe, roughly?: 11,600 years
How many years old is Çatalhöyük, roughly?: 9,000 years
How many years back does the history of the Maiden's Tower go, roughly?: 2,500 years
How long are the historic land walls of Istanbul in kilometres, roughly?: 22 km
For how many years was Topkapı Palace the Ottoman seat of government, roughly?: 400 years
How many people does the great theatre of Ephesus hold, roughly?: 25,000 people
How many people does the Aspendos Theatre hold, roughly?: 12,000 people
How many metres tall is the glass pyramid of the Louvre, roughly?: 21.6 m
By the Population Reference Bureau's 2022 estimate, how many billion people have ever lived?: 117 billion
How long was the Titanic in metres?: 269 m
Roughly how many years did ancient Egyptian civilization last?: 3,000 years
Roughly how many years did the Roman Empire stand?: 500 years
Roughly how many years did the Byzantine Empire last?: 1,100 years
Roughly how many years old is the Terracotta Army?: 2,200 years
Roughly how many years old is Angkor Wat?: 900 years
How many years did the Taj Mahal take to build?: 22 years
Roughly how many years old is the ancient city of Petra?: 2,300 years
How many metres tall is the Statue of Liberty?: 93 metres
In what year was the Ottoman Empire founded?: 1,299
How many years ago were the first Olympics held in ancient Greece?: 2,800 years
Roughly how many years old is the Colosseum?: 1,950 years
Roughly how many years old is Stonehenge?: 5,000 years
In what year did the Western Roman Empire fall?: 476
In what year was the Magna Carta signed?: 1,215
In what year did Gutenberg invent the printing press?: 1,440
In what year did the Hundred Years' War begin?: 1,337
In what year did the Black Death reach Europe?: 1,347
In roughly what century did the Renaissance begin?: 14 century
In roughly what year was Machu Picchu built?: 1,450
How many people could the Colosseum hold?: 50,000 people
How many years did Magellan's voyage around the world take?: 3 years
In what year did the Thirty Years' War begin?: 1,618
In what year was Newton's Principia published?: 1,687
In what year did Watt improve the steam engine?: 1,769
In what year was Napoleon defeated at Waterloo?: 1,815
In what year was Darwin's On the Origin of Species published?: 1,859
How many years did the American Civil War last?: 4 years
In what year was the telephone patented?: 1,876
In what year was the Eiffel Tower completed?: 1,889
In what year were the first modern Olympics held?: 1,896
In what year did World War I begin?: 1,914
In what year did the Russian Revolution take place?: 1,917
In what year was Wikipedia founded?: 2,001
In what year did the Spanish flu pandemic begin?: 1,918
In what year was penicillin discovered?: 1,928
In what year did the Great Depression begin?: 1,929
In what year was the atomic bomb dropped on Hiroshima?: 1,945
In what year was the United Nations founded?: 1,945
In what year was the Universal Declaration of Human Rights adopted?: 1,948
In what year was the double helix structure of DNA revealed?: 1,953
In what year was Everest first climbed?: 1,953
In what year was Sputnik launched into space?: 1,957
In what year was the Berlin Wall built?: 1,961
In what year did the Cuban Missile Crisis happen?: 1,962
In what year did the video game Pong come out?: 1,972
In what year was the first heart transplant performed?: 1,967
In what year was the Woodstock festival held?: 1,969
In what year was the first email sent?: 1,971
In what year was the first mobile phone call made?: 1,973
In what year was Voyager 1 launched?: 1,977
In what year did the IBM PC come out?: 1,981
In what year was the World Wide Web proposed?: 1,989
In what year was the Hubble Space Telescope launched?: 1,990
In what year did euro banknotes and coins enter circulation?: 2,002
In what year was the Human Genome Project completed?: 2,003
In what year was Facebook founded?: 2,004
In what year was Twitter founded?: 2,006
In what year did Bitcoin appear?: 2,009
In what year was Instagram released?: 2,010
In what year was the Higgs boson confirmed?: 2,012
In what year was the first photo of a black hole published?: 2,019
In what year was the James Webb telescope launched?: 2,021
How many years did Notre-Dame Cathedral take to build?: 182 years
How many years has the Sagrada Familia been under construction?: 140 years
How many years did the Panama Canal take to build?: 10 years
How many years did the Suez Canal take to build?: 10 years
For how many years was the Great Pyramid the tallest structure on Earth?: 3,800 years
Roughly how many stone blocks went into the Great Pyramid?: 2,300,000 blocks
Roughly how many metres tall was the Lighthouse of Alexandria?: 110 metres
Roughly how many kilometres long was the Silk Road?: 6,400 km
At its peak, how many million people lived in the Roman Empire?: 60 million
How many kilometres of roads did ancient Rome have?: 80,000 km
How many people were aboard the Titanic's maiden voyage?: 2,224 people
How many years after it sank was the Titanic's wreck found?: 73 years
How many days did Apollo 11 take to reach the Moon?: 4 days
How many hours did Neil Armstrong spend on the Moon?: 21 hours
How many people in total have set foot on the Moon?: 12 people
For how many years has the ISS been continuously crewed?: 25 years
How many years did Voyager 1 take to leave the Solar System?: 35 years
In what year was the first World Cup held?: 1,930
How many years apart are the modern Olympics held?: 4 years
In what year were the Nobel Prizes first awarded?: 1,901
In what year was the first edition of Encyclopaedia Britannica printed?: 1,768
How many years did the French Revolution last?: 10 years
How many years did the Cold War last?: 44 years
How many years did the Vietnam War last?: 19 years
How many years did apartheid last in South Africa?: 46 years
How many years did Nelson Mandela spend in prison?: 27 years
How many years did Queen Elizabeth II reign?: 70 years
How many years did history's longest-reigning monarch rule?: 72 years
How many years did Leonardo da Vinci take to finish the Mona Lisa?: 4 years
How many years did Michelangelo take to paint the Sistine Chapel?: 4 years
Roughly how many years ago was writing invented?: 5,500 years
Roughly how many years ago was the wheel invented?: 5,500 years
Roughly how many years ago did farming begin?: 12,000 years
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 years ago did the last ice age end?: 11,700 years
In what year did the world population first reach 1 billion?: 1,804
Roughly how many years ago was the toothbrush invented?: 500 years
Roughly how many years ago was soap discovered?: 4,800 years
Roughly how many years ago was chocolate first made as a drink?: 3,500 years
Roughly how many years ago did paper money come into use?: 1,100 years
Roughly how many years ago did the fork become common at the table?: 500 years
Roughly how many years ago did people start brewing beer?: 7,000 years
Roughly how many years ago did people start baking bread?: 14,000 years
Roughly how many years ago did people start wearing shoes?: 40,000 years
Roughly how many years ago was the first musical instrument made?: 40,000 years
How many years back do the first cave paintings go?: 45,000 years
Roughly how many years ago did dogs start living with humans?: 15,000 years
Roughly how many years ago did cats move into homes?: 9,500 years
Roughly how many years ago did calendars come into use?: 5,000 years
Roughly how many years ago were the first coins minted?: 2,700 years
Roughly how many years ago did people start making glass?: 5,000 years
Roughly how many years ago did people start using umbrellas?: 4,000 years
Roughly how many years ago was the mirror made?: 8,000 years
Roughly how many years ago did people start using chairs?: 5,000 years
How many years back does the first computer password go?: 60 years
How many years ago was the emoji first created?: 26 years
How many years ago was the first text message sent?: 33 years
Roughly how many years ago was the tin can invented?: 215 years
How many years ago did the fridge arrive in homes?: 100 years
How many years ago did washing machines become common?: 90 years
How many years ago was the dishwasher invented?: 140 years
How many years ago was the zipper invented?: 130 years
How many years ago did plastic bags come into use?: 60 years
How many years ago was the barcode first used?: 51 years
How many kilobytes of memory did Apollo 11's computer have?: 64 kilobytes
How many grams did the first mobile phone weigh?: 1,100 grams
How many minutes did the first mobile phone's battery last?: 30 minutes
How many tons did the first electronic computer weigh?: 27 tons
How many hours did taking the first photograph take?: 8 hours
How many seconds did the first aeroplane flight last?: 12 seconds
How many metres did the first aeroplane flight cover?: 37 metres
How many years ago did the first website go live?: 34 years
How many hours did the Titanic take to sink?: 3 hours
How many lifeboats were on the Titanic?: 20 lifeboats
How many workers built the Eiffel Tower?: 300 workers
In how many pieces was the Statue of Liberty shipped to America?: 350 pieces
How many years was the Mona Lisa missing after it was stolen?: 2 years
How many days did Columbus's first voyage take?: 36 days
How many of Magellan's ships made it back?: 1 ships
How many kilometres long was the Berlin Wall?: 155 km
How many years did World War II last?: 6 years
How many thousand people worked on the Moon landing project?: 400 thousand
How many soldiers were in a Roman legion?: 5,000 soldiers
How many kilos did a medieval knight's armour weigh?: 25 kg
How many oarsmen were on a Viking ship?: 30 oarsmen
How many thousand workers built the Great Pyramid?: 20 thousand
How many people could a Roman bathhouse hold?: 1,600 people
Over how many generations was a medieval cathedral finished?: 4 generations
How many years ago was the first postage stamp printed?: 185 years
How many floors could the first passenger lift rise?: 5 times
How many years ago was the first traffic light installed?: 155 years
How many years ago did the first supermarket open?: 109 years
How many hours did the first washing machine take for one load?: 2 hours
How many km/h could the first automobile do?: 16 km/h
Roughly how many years ago was the first toothpaste made?: 5,000 years
How many thousand years ago did the wedding ring tradition begin in Ancient Egypt?: 5 thousand years
How many years ago did Queen Victoria start the white wedding dress tradition?: 185 years

129 questions

Walking 20 kilometres a day, how many years to go around the Earth in theory?: 5.5 years
How many years does chewing gum take to break down in nature?: 5 years
How many years does a plastic bottle take to break down in nature?: 450 years
How many kilos of waste does a person produce in a year?: 250 kg
How many litres of water does a shower use per minute?: 10 litres
How many litres of water does a person drink in a year?: 700 litres
How big a calorie deficit burns 1 kg of fat?: 7,700 calories
About how many calories are in a banana?: 105 calories
About how many calories are in a burger?: 550 calories
About how many calories are in a slice of pizza?: 285 calories
How many photos are taken worldwide every second?: 60,000 photos
What daily caffeine limit in milligrams is recommended?: 400 mg
How many billion messages are sent worldwide each day?: 100 billion
What is the carbon footprint of one email in grams?: 4 grams
How many books does the average person read in a year?: 4 books
How many ads does the average person see in a day?: 5,000 ads
How many seconds does it take to form a first impression?: 7 seconds
How many seconds does an average kiss last?: 12 seconds
How many times does a person fall in love in a lifetime?: 3 times
How many people does a person kiss in a lifetime?: 15 people
How many hours of a lifetime are spent kissing?: 336 hours
After how many months do couples first say "I love you"?: 5 months
How many milligrams of caffeine are in a glass of tea?: 47 mg
How many milligrams of caffeine are in a cup of coffee?: 95 mg
How many times does a person sneeze in a lifetime?: 55,000 times
How many times a year does the average adult catch a cold?: 3 times
If you overtake second place in a race, what place are you in?: 2
A brick weighs 1 kg plus half a brick. How much does the brick weigh?: 2 kg
If 5 machines make 5 parts in 5 minutes, how long do 100 machines take for 100 parts?: 5 minutes
If 3 cats catch 3 mice in 3 minutes, how many cats catch 100 mice in 100 minutes?: 3 cats
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
Two fathers and two sons went fishing; each caught one fish, but there were only 3 fish. How many went?: 3 people
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
Lily pads double each day and fill the lake on day 30. On which day is the lake half full?: 29 days
What is the sum of all numbers from 1 to 100?: 5,050
Writing 1 to 100, how many times do you write the digit 9?: 20 times
How many squares of all sizes are there on a chessboard?: 204 squares
What do two opposite faces of a die add up to?: 7
How many cards are in a deck without jokers?: 52 cards
How many face cards are in a deck?: 12 cards
At most, how many Friday the 13ths can there be in one year?: 3 times
At 3 o'clock, what is the angle between the hour and minute hands?: 90 degrees
How many degrees does the minute hand turn in one hour?: 360 degrees
How many degrees does the hour hand turn in 12 hours?: 360 degrees
In one day, how many times do the hour and minute hands overlap?: 22 times
If 8 people each shake hands once with everyone else, how many handshakes happen?: 28 handshakes
At a table of 6, how many different pairs can chat?: 15 pairs
After how many months does a couple's first fight happen?: 6 months
How many years do couples date before getting married?: 5 years
How many minutes does an average first date last?: 90 minutes
In a knockout tournament with 16 teams, how many matches are played?: 15 matches
What is the most pieces you can cut a cake into with 3 straight cuts?: 8 pieces
What is the most slices you can cut a pizza into with 4 straight cuts?: 11 slices
Folding a sheet of paper 7 times in theory, how many layers do you get?: 128 layers
In how many different orders can 4 people line up?: 24 ways
A 5-character code using only 0 and 1 — how many combinations exist?: 32 combinations
How many times a day does a child laugh on average?: 300 times
How many seconds does someone spend on a dating profile?: 6 seconds
How many profiles does a user swipe a day on a dating app?: 140 profiles
How many times a day does an adult laugh?: 17 times
How many hairs does a person shed a day?: 100 strands
How many centimetres does hair grow in a month?: 1 cm
How fast does a sneeze travel in km/h?: 50 km/h
How many tiles are in a rummikub-style tile game set?: 106 pieces
How many million matches happen worldwide each day?: 26 million
How many minutes does it take to reply to a first message?: 30 minutes
How many times does a couple break up and get back together?: 2 times
How many guests does an average wedding have?: 130 people
How many million couples get married worldwide each year?: 40 million
How many times does a person get their heart broken in a lifetime?: 5 times
How many months does it take to get over a heartbreak?: 3 months
For how many months does the brain stay in the intense "in love" phase?: 18 months
How many minutes a day do couples talk to each other?: 35 minutes
How many months does an average long-distance relationship last?: 14 months
At what age does a person usually have their first real love?: 17 years old
How many minutes does a marriage proposal last on average?: 5 minutes
How many months does an engagement last on average worldwide?: 13 months
How many relationships does a person have in a lifetime?: 7 relationships
How many seconds of hugging release the happiness hormone?: 20 seconds
By about how many beats does holding hands lower the pulse?: 10 beats
How many friends does a couple typically have in common?: 12 friends
How many days after a break-up do people clean up their social media?: 7 days
How many times a month does someone check an ex's profile?: 4 times
How many bones is a baby born with?: 300 bones
How many million colours can the human eye tell apart?: 10 million
What pH is stomach acid?: 2 pH
How many days does skin take to renew itself?: 27 days
How many grams of skin does the body shed a day?: 1 grams
How many taste buds does the tongue have?: 10,000 taste buds
How many different scents can the nose tell apart?: 1,000,000 scents
How many decibels can the human voice reach?: 129 decibels
How many decibels is a whisper?: 30 decibels
Up to how many thousand hertz can the human ear hear?: 20 thousand Hz
How many items can a person grasp at a glance without counting?: 4 items
How many seconds does short-term memory hold?: 20 seconds
How many days can a person survive without water?: 3 days
How many weeks can a person last without food?: 3 weeks
How many minutes does it take to fall asleep on average?: 15 minutes
How many times do we dream in one night?: 5 times
How many metres long are an adult's intestines?: 8 metres
How many squares are on one face of a Rubik's Cube?: 9 squares
How many pieces are in a chess set in total?: 32 pieces
How many pentagons are on a classic football?: 12 pentagons
What is 2 to the power of 10?: 1,024
How many times a day does a clock show 11:11?: 2 times
How many years is one billion seconds?: 32 years
How many days is one million seconds?: 12 days
How many decades are in a century?: 10 decades
At most, how many Sundays can February have?: 5 Sundays
How many days of a year fall on a weekend?: 104 days
How many people are needed for a shared birthday to be more likely than not?: 23 people
Flipping a coin 3 times, what is the chance of all heads?: 13 %
Rolling two dice, what is the chance the total is 7?: 17 %
How many times does an average heart beat per minute?: 72 times
How many breaths does a person take in a day?: 22,000 times
How many breaths does a person take per minute?: 15 times
In a lifetime, how many times around the Earth does a person walk?: 5 times
How many edges does a cube have?: 12 edges
How many steps does the average person take a day?: 5,000 steps
How many tons of food does a person eat in a lifetime?: 60 tons
How many kilos of food does the average person eat in a year?: 800 kg
How many times does the average person move house in a lifetime?: 11 times
How many hours does a person spend waiting in queues in a lifetime?: 3,000 hours
How many years of a lifetime are spent on the phone?: 9 years
How many words does the average person speak a day?: 16,000 words
How many times a day does the average person check their phone?: 58 times
How many times a day does the average person blink?: 15,000 times
How fast do nerve signals travel in km/h?: 430 km/h
What speed in km/h does a plane reach at take-off?: 270 km/h

Nobody knows the exact number — the closest guess wins.