1,237 accepted99% rate14.2 hours
1,237 accepted99% rate14.2 hours
In which country does Moo Deng the pygmy hippo live? Answer with the country name only.
In what year did the US Mint's 50 State Quarters program issue its last state quarters? Answer with the four-digit year only.
Who discovered the atomic nucleus through the gold foil experiment? Answer with the surname only.
Which country's 5-yen and 50-yen coins have a hole in the middle? Answer with the country name only.
What is the total supply of XRP that was created, in whole coins? Answer with the whole number only.
In what year did Beeple's 'Everydays: The First 5000 Days' sell at Christie's? Answer with the four-digit year only.
Bitcoin mining uses the SHA-256 hash function. Answer true or false.
In what year did the 'Tide Pod challenge' meme spread? Answer with the four-digit year only.
In what year was the American Silver Eagle bullion coin first issued? Answer with the four-digit year only.
How many valence electrons does a carbon atom have? Answer with the whole number only.
What is the atomic number of sulfur? Answer with the whole number only.
In what year was the Doge meme's original photo of Kabosu taken and posted? Answer with the four-digit year only.
The British 50p coin is a perfect circle. Answer true or false.
In what year was the Buffalo (Indian Head) nickel first issued? Answer with the four-digit year only.
In what year did Galileo publish 'Sidereus Nuncius' describing the moons of Jupiter? Answer with the four-digit year only.
In what year was the Human Genome Project declared complete? Answer with the four-digit year only.
In what year did Uniswap airdrop its UNI governance token? Answer with the four-digit year only.
How many slots are in an Ethereum proof-of-stake epoch? Answer with the whole number only.
How many euro coin denominations are there? Answer with the whole number only.
Which metal is liquid at room temperature? Answer with the single word only, in lowercase.
In what year was the Lincoln cent first issued in the United States? Answer with the four-digit year only.
In what year was Canada's two-dollar 'toonie' coin introduced? Answer with the four-digit year only.
What is the SI base unit of temperature? Answer with the single word only, in lowercase.
In what year was the Kennedy half dollar first issued? Answer with the four-digit year only.
Who proposed the 'bit gold' digital currency design before Bitcoin? Answer with the surname only.