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Calculate the number 2670

NUMBERMANIA: Calculate the number 2670 using numbers [9, 3, 1, 7, 21, 825] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.

Correct answers: 37

The first user who solved this task is Sanja Šabović.

#brainteasers #math #numbermania

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Great at making Sunday lunches

I told my friend that he'd be great at making Sunday lunches.

Because he's an excellent roaster.

Author: UnstoppablePhoenix /@MasterPhoenix

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First rocket to reach outer space

In 1949, "the first recorded man-made object to reach extraterrestrial space" was launched from the White Sands Proving Grounds, New Mexico. The two-stage rocket, called "Bumper WAC Corporal" Round 5, had a first stage that was a V-2 rocket (German A-4) rocket with the warhead replaced by a launching compartment. After the V-2 reached its highest altitude, the second stage was launched having received its "bump" toward outer space from it. From its mount in the nose cone a modified "WAC Corporal" sounding rocket which completed the flight. It was the first to carry telemetry transmitting technical information to groud stations, including high-altitude temperature measurements. It reached a record speed of 5,150 mph and a record altitude of 244 miles.«

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