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Calculate the number 7551

NUMBERMANIA: Calculate the number 7551 using numbers [1, 6, 3, 9, 38, 458] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.

Correct answers: 27

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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Robert Whitehead

Died 14 Nov 1905 at age 82 (born 3 Jan 1823).British engineer who invented the modern torpedo. His first torpedo lacked speed and range. However, by 1870 he had managed to increase its speed to 7 knots and could now hit a target 700 yards away. The following year the British Navy purchased Whitehead's invention. Although a spar torpedo, a charge attached to a long pole and carried by a small boat, had been used during the American Civil War, Robert Whitehead was the first to produce a self-propelling torpedo. Whitehead's torpedo was propelled by a compressed-air engine, carried 18lbs. of dynamite. Its most important feature was a self-regulating device which kept the torpedo at a constant preset depth. Edison made a movie of a Whitehead torpedo launch (1900).

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