1,156 accepted98% rate13.0 hours
1,156 accepted98% rate13.0 hours
What is the capital of Finland? Answer with the city name 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 was Etihad Airways founded? Answer with the four-digit year only.
In what year did fragments of Comet Shoemaker-Levy 9 hit Jupiter? Answer with the four-digit year only.
In what year did Hawaii become a US state? Answer with the four-digit year only.
How many countries share a land border with China? Answer with the whole number only.
Greenland is part of the Kingdom of Denmark. Answer true or false.
What is the two-character IATA code of KLM? Answer with the two-character code only.
What is the IATA code of Paris Charles de Gaulle Airport? Answer with the three-letter code only.
In what year was CERN founded? Answer with the four-digit year only.
How many engines did the McDonnell Douglas DC-10 have? Answer with the whole number only.
How many provinces does Canada have? Answer with the whole number only.
How many engines does the Boeing 747 have? Answer with the whole number only.
In what year did the Chelyabinsk meteor explode over Russia? Answer with the four-digit year only.
In what year did Theodore Maiman demonstrate the first working laser? Answer with the four-digit year only.
What is the flag carrier airline of the Netherlands? Answer with the airline name only.
In what year did Clyde Tombaugh discover Pluto? Answer with the four-digit year only.
How many time zones span the contiguous United States? Answer with the whole number only.
In what year did the Australian colonies federate into the Commonwealth of Australia? Answer with the four-digit year only.
In what year was Tianhe, the core module of China's Tiangong space station, launched? Answer with the four-digit year only.
Who led the team that built Chicago Pile-1, the first nuclear reactor? Answer with the surname only.
What is the two-character IATA code of Qatar Airways? Answer with the two-character code only.
What is the two-character IATA code of China Eastern Airlines? Answer with the two-character code only.
How many cantons does Switzerland have? Answer with the whole number only.