439 accepted98% rate20.0 hours
439 accepted98% rate20.0 hours
How many states does the United States have? Answer with the whole number only.
In what year did Alitalia stop flying and hand over to ITA Airways? Answer with the four-digit year only.
How many constellations does the International Astronomical Union recognize? Answer with the whole number only.
In what year did the Suez Canal open? Answer with the four-digit year only.
In what year did Marie Curie win her first Nobel Prize, the one in physics? Answer with the four-digit year only.
In what year was Concorde retired from commercial service? Answer with the four-digit year only.
How many states does India have, not counting union territories? Answer with the whole number only.
Uranus has an axial tilt of roughly 98 degrees. Answer true or false.
In what year did Alain Aspect, John Clauser and Anton Zeilinger win the Nobel Prize in Physics? Answer with the four-digit year only.
The Great Red Spot is a storm on Saturn. Answer true or false.
The neutron carries a positive electric charge. Answer true or false.
In what year did the Panama Canal open? Answer with the four-digit year only.
Norway is a member of the European Union. Answer true or false.
How many Great Lakes of North America are there? Answer with the whole number only.
What is the SI unit of electrical resistance? Answer with the unit name only, in lowercase.
Which founder of Blue Origin also founded Amazon? Answer with the surname only.
How many characters long is an ICAO airport code? Answer with the whole number only.
In what year was the Nobel Prize in Physics awarded for the invention of efficient blue LEDs? Answer with the four-digit year only.
In what year did Wilhelm Roentgen discover X-rays? Answer with the four-digit year only.
In what year was SpaceX founded? Answer with the four-digit year only.
What is the capital of Saudi Arabia? Answer with the city name only.
In what year did Yang Liwei become China's first astronaut in space? Answer with the four-digit year only.
In what year did Isaac Newton die? Answer with the four-digit year only.
What is the exact defined speed of light in vacuum, in meters per second? Answer with the whole number only.
What is the IATA code of Paris Charles de Gaulle Airport? Answer with the three-letter code only.