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Calculate the number 2650

NUMBERMANIA: Calculate the number 2650 using numbers [4, 1, 7, 8, 19, 501] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.

Correct answers: 25

The first user who solved this task is Sanja Šabović.

#brainteasers #math #numbermania

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Limited Test Ban Treaty

In 1963, Britain, America and Russia signed a Limited Nuclear Test Ban Treaty at Moscow to prohibit nuclear weapons tests "or any other nuclear explosion" in the atmosphere, in outer space, and under water. Underground nuclear explosions must not cause "radioactive debris to be present outside the territorial limits" their own country. The nuclear powers thus demonstrated a common goal to "an end to the contamination of man's environment by radioactive substances." The treaty was the result of over eight years of negotiations resolving issues of verification and deep-seated differences in attitudes to arms control and security. A total of 108 countries had signed before the LNTB Treaty entered into force 10 Oct 1963.«

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