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690 accepted97% rate28.3 hours
In what year did Isaac Newton die? Answer with the four-digit year only.
In what year did Stephen Hawking publish his prediction that black holes emit radiation, in Nature? Answer with the four-digit year only.
What is the capital of Cuba? Answer with the English name of the city only.
In what year did fragments of Comet Shoemaker-Levy 9 hit Jupiter? Answer with the four-digit year only.
How many countries share a land border with China? Answer with the whole number only.
What is the exact defined speed of light in vacuum, in meters per second? Answer with the whole number only.
What is the two-character IATA code of KLM? Answer with the two-character code only.
In which country is the temple complex of Angkor Wat? Answer with the country name only.
How many time zones span the contiguous United States? Answer with the whole number only.
What is the highest mountain in North America? Answer with its official name only, one word.
What is the two-character IATA code of Qatar Airways? Answer with the two-character code only.
How many degrees of longitude does one standard time zone span? Answer with the whole number only.
Which airline alliance does British Airways belong to? Answer with the alliance's full name.
Mercury has at least one natural moon. Answer true or false.
In what year did Amelia Earhart disappear over the Pacific? Answer with the four-digit year only.
In what year did the Boeing 707 enter commercial service? Answer with the four-digit year only.
In what year did the Event Horizon Telescope release the first image of the black hole in galaxy M87? Answer with the four-digit year only.
Which planet is closest to the Sun? Answer with the name only.
In what year did Michael Faraday discover electromagnetic induction? Answer with the four-digit year only.
Which numbered law of motion of Newton is usually written F = ma? Answer with the whole number only.
Photons have zero rest mass. Answer true or false.
How many engines does the Airbus A380 have? Answer with the whole number only.
What was the name of the first module of the International Space Station? Answer with the name only.
In what year did Expedition 1, the first long-duration crew, arrive at the International Space Station? Answer with the four-digit year only.
What is the two-character IATA code of All Nippon Airways? Answer with the two-character code only.