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Calculate the number 811

NUMBERMANIA: Calculate the number 811 using numbers [5, 5, 4, 1, 28, 145] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.

Correct answers: 30

The first user who solved this task is Sanja Šabović.

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B.J. Novak: Learned Nothing in College

I learned nothing in college. It was really kind of my own fault. I had a double major: psychology and reverse psychology.

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First balloon flight in Britain

In 1784, the first successful balloon ascent to be made in England was demonstrated by an Italian, Vincenzo Lunardi before a crowd of onlookers in London that included the Prince of Wales and other eminent statesmen. He lifted off from the Artillery Ground in a brightly decorated, hydrogen balloon accompanied by a dog, a cat and a pigeon. Because of the impatience of the crowd, he left before the balloon was fully inflated, thus needing to leave behind his friend George Biggin who had planned to travel with him. Lunardi's flight covered a distance of 24 miles, and he descended at Ware. It was only in the previous year that the Montgolfier brothers made the first hot-air balloon ascent on 5 Jun 1783.«

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