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Calculate the number 7790

NUMBERMANIA: Calculate the number 7790 using numbers [7, 9, 9, 4, 81, 881] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.

Correct answers: 2

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Every guy

Every guy thinks that every girls dream is to find the perfect guy….Please, every girls dream is to eat without getting fat.

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Mars survey

In 1997, the Mars Global Surveyor, launched in Nov 1996, went into an elliptical orbit around Mars. To drop into a lower orbit the original mission plan was to use a braking effect by dipping into the upper Martian atmosphere. The lower orbit was a better position for mapping purposes. However, the aerobraking method originally planned was suspended for several weeks to give engineers time to develop more gentle manoeuvers to protect the craft when a solar array failed to deploy correctly, and was flexing excessively. It was to spend two years mapping the surface of Mars.

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