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What is the missing number?

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

Correct answers: 95

The first user who solved this task is Djordje Timotijevic.

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Uber is in trouble because it...

Uber is in trouble because it doesn't pay any taxi.

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Ivan Matveyevich Vinogradov

Born 2 Sep 1891; died 20 Mar 1983 at age 91.Soviet mathematician known for his contributions to the analytical theory of numbers, including a partial solution of the Goldbach conjecture proving that every sufficiently large odd integer can be expressed as the sum of three odd primes. He described his methods in his most celebrated piece of work Some Theorems Concerning the Theory of Prime Numbers (1937).[EB Online gives born 2 Sep 1891; MacTutor gives 14 Sep 1891, died: 20 March 1983]

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