Replace the question mark with a number
[2706] Replace the question mark with a number - MATH PUZZLE: Can you replace the question mark with a number? - #brainteasers #math #riddles - Correct Answers: 350 - The first user who solved this task is Roxana zavari
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Replace the question mark with a number

MATH PUZZLE: Can you replace the question mark with a number?
Correct answers: 350
The first user who solved this task is Roxana zavari.
#brainteasers #math #riddles
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Two old men - Bert and Harry...

Two old men - Bert and Harry - were sitting quietly in a bar.
"When was the last time you made love to a woman?" Bert asked Harry.
"1945," replied Harry.
"My goodness!" exclaimed Bert. "That's a long time ago."
"Not really," said Harry, glancing at his watch. "It's only twenty past eight now."
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Christian Goldbach

Died 20 Nov 1764 at age 74 (born 18 Mar 1690).Russian mathematician whose contributions to number theory include Goldbach's conjecture, formulated in a letter to Leonhard Euler dated 7 Jul 1742. Stated in modern terms it proposes that: "Every even natural number greater than 2 is equal to the sum of two prime numbers." It has been checked by computer for vast numbers - up to at least 4 x 1014 - but still remains unproved. Goldbach made another conjecture that every odd number is the sum of three primes, on which Vinogradov made progress in 1937. (It has been checked by computer for vast numbers, but remains unproved.) Goldbach also studied infinite sums, the theory of curves and the theory of equations.«[Image: Letter to Euler, in which Goldbach presented his conjecture.]
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