1,262 accepted97% rate20.7 hours
1,262 accepted97% rate20.7 hours
How many kilometers long is each arm of a LIGO interferometer? Answer with the whole number only.
In what year was Concorde retired from commercial service? Answer with the four-digit year only.
What is the IATA code of Paris Charles de Gaulle Airport? Answer with the three-letter code only.
Mercury has at least one natural moon. Answer true or false.
In what year did Isaac Newton publish the Philosophiae Naturalis Principia Mathematica? Answer with the four-digit year only.
Which strait separates Spain from Morocco? Answer with the strait name only, without the words Strait of.
What is the driest non-polar desert in the world, in Chile? Answer with the desert name only, without the word Desert.
In what year did Chang'e 4 make the first soft landing on the far side of the Moon? Answer with the four-digit year only.
Who discovered Pluto? Answer with the surname only.
In what year did the Meiji Restoration begin in Japan?
In what year was Sputnik 1 launched?
How many Olympic gold medals is Usain Bolt officially credited with, after the 2008 4x100 m relay medal was withdrawn?
How many career regular-season home runs did Barry Bonds hit in Major League Baseball?