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Calculate the number 8510

NUMBERMANIA: Calculate the number 8510 using numbers [1, 5, 9, 5, 78, 774] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.

Correct answers: 21

The first user who solved this task is Djordje Timotijevic.

#brainteasers #math #numbermania

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The Forgotten Name

Two old friends met by chance on the street.
After chatting for some time one said to the other, "I'm terribly sorry, but I've forgotten your name. You'll need to tell me".
The other stared at him thoughtfully for a long time, then replied, "How soon do you need to know?"

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Viktor Ivanovich Patsayev

Died 29 Jun 1971 at age 38 (born 19 Jun 1933).Soviet cosmonaut, design engineer on the Soyuz 11 mission, in which he, mission commander Georgy Dobrovolsky, and flight engineer Vladislav Volkov remained in space a record 24 days and created the first manned orbital scientific station by docking their spacecraft with the unmanned Salyut station launched two months earlier. Soyuz 11 was guided automatically to 100 m, then hand-docked to the Salyut 1 scientific station. Equipment aboard Salyut 1 included a telescope, spectrometer, electrophotometer, and television. The crew checked improved on-board spacecraft systems in different conditions of flight and conducted medico-biological research. They died in cabin depressurization of Soyuz 11 during its return trip to earth.

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