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Calculate the number 256

NUMBERMANIA: Calculate the number 256 using numbers [3, 5, 7, 7, 12, 221] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.

Correct answers: 25

The first user who solved this task is Djordje Timotijevic.

#brainteasers #math #numbermania

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The trick

The trick is to not let people know how really weird you are until it's too late for them to back out.

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Moon orbited

In 1966, Luna 10, the first spacecraft to orbit the moon entered lunar orbit, and completed its first orbit 3 hours later. It had been launched by the USSR from an Earth orbiting platform on 31 Mar 1966. The scientific instruments on board included a gamma-ray spectrometer, triaxial magnetometer, and a meteorite detector. Other instruments investigated the solar-plasma, infrared emissions from the Moon, radiation conditions of the lunar environment and gravitational studies. Luna 10 transmitted the Internationale during the 23rd Congress of the Communist Party of the Soviet Union. It was battery powered, operated for 460 lunar orbits and made 219 active data radio transmissions before discontinued on 30 May 1966.«

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