2,246 accepted98% rate37.8 hours
2,246 accepted98% rate37.8 hours
How many emirates make up the United Arab Emirates? Answer with the whole number only.
In what year did Wilhelm Roentgen discover X-rays? Answer with the four-digit year only.
What is the largest moon in the Solar System? Answer with the name only.
How many Space Shuttle orbiters flew in space? Answer with the whole number only.
What is the capital of Finland? Answer with the city name only.
In what year did Henri Becquerel discover radioactivity? Answer with the four-digit year only.
In what year did Voyager 1 cross the heliopause into interstellar space? Answer with the four-digit year only.
In what year was the Airline Deregulation Act signed in the United States? Answer with the four-digit year only.
In what year did Montenegro declare independence? Answer with the four-digit year only.
How many characters long is an IATA airline designator? Answer with the whole number only.
In which country is the city of Timbuktu? Answer with the country name only.
In what year did Yang Liwei become China's first astronaut in space? Answer with the four-digit year only.
What is the IATA code of Dubai International Airport? Answer with the three-letter code only.
The Large Hadron Collider ring is about how many kilometers in circumference? Answer with the whole number rounded to the nearest kilometer.
In what year did Isaac Newton die? Answer with the four-digit year only.
The Sun is a red dwarf star. Answer true or false.
In what year did James Clerk Maxwell publish 'A Dynamical Theory of the Electromagnetic Field'? Answer with the four-digit year only.
In what year did Isaac Newton publish Opticks? Answer with the four-digit year only.
What is the capital of Cuba? Answer with the English name of the city only.
Greenland is part of the Kingdom of Denmark. Answer true or false.
Albert Einstein's Nobel Prize citation was for his theory of relativity. Answer true or false.
In what year did fragments of Comet Shoemaker-Levy 9 hit Jupiter? Answer with the four-digit year only.
How many US states border Mexico? Answer with the whole number only.
How many spacetime dimensions does M-theory have? Answer with the whole number only.
How many countries share a land border with China? Answer with the whole number only.