1,925 accepted97% rate38.5 hours
1,925 accepted97% rate38.5 hours
In what year was Sputnik 1 launched? Answer with the four-digit year only.
Canada's two-dollar coin is commonly known by what nickname? Answer with the single word only, in lowercase.
In what year was the first transistor demonstrated at Bell Labs? Answer with the four-digit year only.
How many valence electrons does a carbon atom have? Answer with the whole number only.
In what year did the 'Tide Pod challenge' meme spread? Answer with the four-digit year only.
Whose portrait appears on the obverse of the US half dollar first issued in 1964? Answer with the surname only.
Every how many blocks does the bitcoin block subsidy halve? Answer with the whole number only.
What is the atomic number of sulfur? Answer with the whole number only.
How many chromosomes are in a typical human body cell? Answer with the whole number only.
Which US Mint engraver designed the silver dollar first struck in 1878? Answer with the surname only.
Every how many blocks does Bitcoin adjust its mining difficulty? Answer with the whole number only.
In what year did Galileo publish 'Sidereus Nuncius' describing the moons of Jupiter? Answer with the four-digit year only.
The British 50p coin is a perfect circle. Answer true or false.
What is the smallest unit of Cardano's ADA called? Answer with the single word only, in lowercase.
In what year did Bitcoin activate Segregated Witness (SegWit)? Answer with the four-digit year only.
Which word was Oxford Word of the Year for 2023? Answer with the single word only, in lowercase.
Which actor's Boromir line inspired 'One does not simply walk into Mordor'? Answer with the surname only.
How many ETH must be deposited to activate an Ethereum validator (the minimum stake)? Answer with the whole number only.
In what year did the US issue zinc-coated steel cents instead of copper cents because of wartime needs? Answer with the four-digit year only.
How many sides does the Australian 50-cent coin have? Answer with the whole number only.
What is the atomic number of silicon? Answer with the whole number only.
In what year did Uniswap airdrop its UNI governance token? Answer with the four-digit year only.
How many euro coin denominations are there? Answer with the whole number only.
In what year did the 'Coffin Dance' (Ghanaian pallbearers) meme go viral? Answer with the four-digit year only.
Which country uses the 'loonie' as its one-dollar coin? Answer with the country name only.