Replace the question mark with a number
[3763] Replace the question mark with a number - MATH PUZZLE: Can you replace the question mark with a number? - #brainteasers #math #riddles - Correct Answers: 70 - The first user who solved this task is Eugenio G. F. de Kereki
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Replace the question mark with a number

MATH PUZZLE: Can you replace the question mark with a number?
Correct answers: 70
The first user who solved this task is Eugenio G. F. de Kereki.
#brainteasers #math #riddles
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Donald Glover: Serious Black Candidate

When he was coming up, people were like, We have a serious black candidate for president. This is crazy. We have a serious black candidate. And then when he won, they were like, Our first multi-racial president. And I was like, Thats not fair. I mean, lets set the record straight. If you went outside tonight after this show and Barack Obama was stealing your car, you wouldnt yell, Hey, someone stop that mixed guy!
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Hydrogen balloon

In 1783, the first manned voyage of a hydrogen balloon left Paris carrying Professor Jacques Alexander Cesar Charles and Marie-Noel Robert to about 600 m and landed 43 km away after 2 hours in the air. Robert then left the balloon, and Charles continued the flight briefly to 2700 m altitude, measured by a barometer. This hydrogen-filled balloon was generally spherical and used a net, load ring, valve, open appendix and sand ballast, all of which were to be universally adopted later. His hydrogen generator mixed huge quantities of sulfuric acid with iron filings. On 27 Aug 1783, Charles had launched an unmanned hydrogen balloon, just before the Montgolfiers' flight.[Image: from 1897 Encyclopedia Britannica]
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