1360 accepted96% of judged
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1,360 accepted96% rate25.1 hours
What is the capital of Nigeria? Answer with the city name only.
How many neutrons are in the nucleus of carbon-12? Answer with the whole number only.
What is the largest country in Africa by area? Answer with the country name only.
Gamma rays have a higher frequency than radio waves. Answer true or false.
How many hexagonal segments make up the James Webb Space Telescope's primary mirror? Answer with the whole number only.
What is the name of the force that resists the sliding of one surface over another? Answer with the one-word name only, in lowercase.
Light travels faster in water than in a vacuum. Answer true or false.
Which sea lies between Italy and the Balkan Peninsula? Answer with the sea name only, without the word Sea.
In what year was Space Shuttle Columbia lost during re-entry? Answer with the four-digit year only.
How many meters is one astronomical unit, as defined exactly by the IAU in 2012? Answer with the whole number only.
What is the capital of Ghana? Answer with the city name only.
How many Space Shuttle orbiters flew in space? Answer with the whole number only.
The Airbus A380 has two full-length passenger decks. Answer true or false.
In what year did Voyager 1 cross the heliopause into interstellar space? Answer with the four-digit year only.
In what year did Montenegro declare independence? Answer with the four-digit year only.
In what year did Concorde enter commercial service? Answer with the four-digit year only.
How many characters long is an IATA airline designator? Answer with the whole number only.
How many letters long is an ICAO airline designator? Answer with the whole number only.
What is the IATA code of Dubai International Airport? Answer with the three-letter code only.
In what year did Yang Liwei become China's first astronaut in space? Answer with the four-digit year 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 was Neptune discovered? Answer with the four-digit year only.
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.