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Calculate the number 6894

NUMBERMANIA: Calculate the number 6894 using numbers [9, 8, 8, 2, 37, 834] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.

Correct answers: 34

The first user who solved this task is Roxana zavari.

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Fly for a day or?

Give a man a plane ticket and he’ll fly for a day.

Push a man from a plane and he’ll fly for the rest of his life.

Author:prash_rant

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Patent for cotton spinning

In 1791, a U.S. patent for spinning cotton by water power was issued to William Pollard of Philadelphia. In his petition, Pollard had stressed usefulness and an important economic value to the U.S., rather than novelty. Actual details of any machine were vague and secondary his claims being of deserving character. Pollard was one of three British immigrants that sought exclusive rights to introduce into America cotton spinning machines based on those devised by Richard Arkwright in England. By Jun 1791, Pollard's factory was in full operation, and is said to be the first water frame built in that city. However, it was not successful, and for that reason may have in effect retarded the growth of the industry in Philadelphia.«

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