Can you replace the question mark with a number?
[6379] Can you replace the question mark with a number? - MATH PUZZLE: Can you replace the question mark with a number? - #brainteasers #math #riddles - Correct Answers: 103 - The first user who solved this task is Nasrin 24 T
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Can you replace the question mark with a number?

MATH PUZZLE: Can you replace the question mark with a number?
Correct answers: 103
The first user who solved this task is Nasrin 24 T.
#brainteasers #math #riddles
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Learning by example...

Little Johnny was caught swearing by his teacher.

"Johnny," she said, "you shouldn't use that kind of language. Where did you hear such talk, anyway?"

"My daddy said it," he responded.

"Well, that doesn't matter," explained the teacher. "You don't even know what it means."

"I do, too!" Little Johnny retorted. "It means the car won't start."

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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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