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Replace the question mark with a number

MATH PUZZLE: Can you replace the question mark with a number?

Correct answers: 170

The first user who solved this task is Donya Sayah30.

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Alfred Robles: Girl Like a Report Card

I want a girl that reminds me of my report card: her face has to be an A, she has to have double DDs, cause tonight I want to F.

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Soviet space shuttle

In 1988, the Soviet Union launched its first space shuttle, Buran ("Snowstorm"), unmanned, on its first and only orbital flight. Russia authorized its shuttle program in 1976 in response to the U.S. Space Shuttle program. Buran's only orbital flight was unmanned, as the life support system had not been checked out and the CRT displays had no software installed. The Buran was launched on the powerful Energiya booster into a 250 km orbit. Its computer's memory limitations limited the flight to 2 orbits in 206-min. before reentry and a safe automatic touchdown at Tyuratum. Afterwards, the project's funding was cut, and eventually cancelled (1993). Two other partially completed Buran shuttles were dismantled at their production site in Nov 1995.

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