1,456 accepted98% rate19.7 hours
1,456 accepted98% rate19.7 hours
Which US city's mint uses the mint mark 'D'? Answer with the city name only.
The word 'meme' was coined in a book about evolution. Answer true or false.
Which organelle is known as the powerhouse of the cell? Answer with the single word only, in lowercase.
Who is the executive chairman of Strategy (formerly MicroStrategy), famous for buying bitcoin? Answer with the surname only.
What is the maximum supply of Litecoin, in whole coins? Answer with the whole number only.
What is the atomic number of mercury? Answer with the whole number only.
How many shillings was the British guinea fixed at from 1717? Answer with the whole number only.
Which company is most associated with the XRP Ledger and the XRP token? Answer with the name only.
In what year did the 'Ever Given' ship get stuck in the Suez Canal, spawning memes? Answer with the four-digit year only.
How many bones does a typical adult human have? Answer with the whole number only.
What was the gold coin introduced by the Byzantine emperor Constantine the Great called? Answer with the single word only, in lowercase.
In what year did the 'Dancing Baby' 3D animation spread online? Answer with the four-digit year only.
Traditional Chinese cash coins have a hole of what shape in the middle? Answer with the single word only, in lowercase.
In what year did the Wright brothers make their first powered flight? Answer with the four-digit year only.
Which dog breed is the Dogecoin mascot? Answer with the name only.
What is the largest moon of Jupiter? Answer with the name only.
In what year did Dmitri Mendeleev publish his periodic table? Answer with the four-digit year only.
In what year did Mike Godwin formulate Godwin's law? Answer with the four-digit year only.
What is the face value in US dollars of a 1933 Double Eagle gold coin? Answer with the whole number only.
In what year did 'The Dress' (blue and black or white and gold) go viral? Answer with the four-digit year only.
In what year did Pepe the Frog first appear in the comic 'Boy's Club'? Answer with the four-digit year only.
What misspelled word for 'hold' became a crypto meme in 2013? Answer with the single word only, in lowercase.
Which planet has the most extensive ring system? Answer with the name only.
What is Litecoin's target block time in seconds? Answer with the whole number 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.