Can you replace the question mark with a number?
MATH PUZZLE: Can you replace the question mark with a number?Correct answers: 43
The first user who solved this task is Nílton Corrêa de Sousa.
#brainteasers #math #riddles
Aero-engineIn 1880, Colonel Beaumont's air-engine for propelling railway carriages was successfully tried at Woowich (a little steam is used). His system largely employed in various ways by Paris Compressed Air company was described to the British Association at Newcastle-upon-Tyne (Sep 1889).[* p.30] |