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Thắng Nguyễn Đức

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MATH PUZZLE: Can you replace the question mark with a number?
Can you name the athletes by the picture?
Look carefully the picture and guess the game name.

Christian Goldbach

Born 18 Mar 1690; died 20 Nov 1764 at age 74.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.]

If you want to know who is rea...

If you want to know who is really man’s best friend, put your dog and your wife in the trunk of your car, come back an hour later, open the trunk, and see which one is happy to see you.
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