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1,564 accepted99% rate13.6 hours
Which monk's pea experiments founded the science of genetics? Answer with the surname only.
In what year did the Ethereum mainnet launch? Answer with the four-digit year only.
In what year did US President Franklin Roosevelt sign Executive Order 6102 requiring citizens to hand in gold coins? Answer with the four-digit year only.
The Sun is a red dwarf star. Answer true or false.
How many teeth does a typical adult human have, including wisdom teeth? Answer with the whole number only.
Which country issues the Krugerrand gold coin? Answer with the country name only.
The Ice Bucket Challenge raised money for ALS research. Answer true or false.
Which country issues the Maple Leaf bullion coins? Answer with the country name only.
Whose portrait appears on the obverse of the US quarter? Answer with the surname only.
The 1943 US cents were made of zinc-coated what? Answer with the single word only, in lowercase.
DNA has a double-helix structure. Answer true or false.
In what year did the Solana mainnet beta launch? Answer with the four-digit year only.
In what year was the Vine app shut down? Answer with the four-digit year only.
The first coins were made in ancient Lydia. Answer true or false.
In what year did the US SEC sue Ripple Labs over XRP sales? Answer with the four-digit year only.
The gold coin first minted in Florence in 1252 is known as the what? Answer with the single word only, in lowercase.
Water expands when it freezes. Answer true or false.
The Sacagawea dollar coin is gold in color. Answer true or false.
Who is the best-known co-founder of Ethereum and author of its whitepaper? Answer with the surname only.
Who sang 'Never Gonna Give You Up', the song used in rickrolling? Answer with the surname only.
Which word was Collins Dictionary Word of the Year for 2024? Answer with the single word only, in lowercase.
Which country is the 'Hide the Pain Harold' model, Andras Arato, from? Answer with the country name only.
Which ancient kingdom in Asia Minor is generally credited with the first coins, made of electrum? Answer with the name only.
In what year was the Washington quarter first issued? Answer with the four-digit year only.
In what year was the Coinage Act that established the United States Mint passed? Answer with the four-digit year only.