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MAGIC SQUARE: Calculate A-B+C

The aim is to place the some numbers from the list (3, 5, 11, 27, 29, 35, 58, 66, 68, 74, 79) into the empty squares and squares marked with A, B an C. Sum of each row and column should be equal. All the numbers of the magic square must be different. Find values for A, B, and C. Solution is A-B+C.

Correct answers: 12

The first user who solved this task is Nasrin 24 T.

#brainteasers #math #magicsquare

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WELL?

It was the middle of the night. Suddenly there was a loud rapping on the doctor's door, followed by a groan.
The doctor angrily thrust his head out of the window. "WELL?" he shouted.
"No," moaned the man. "Sick."

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Marin Mersenne

Born 8 Sep 1588; died 1 Sep 1648 at age 59. French mathematician, natural philosopher and theologian whose discovery of the Mersenne numbers is considered to have been a pioneering effort to derive a formula that would represent all prime numbers. Although he failed in this, his work on numbers of the form (2 p - 1), where p is prime, has been of continuing interest in the investigation of large primes. Although Mersenne numbers represent only some primes, their formula inspired great advances in the theory of numbers. He continued some of Galileo's work in acoustics and stimulated some of Galileo's own later discoveries. It is through him that Galileo's work became known outside Italy. Mersenne proposed the use of the pendulum as a timing device to Huygens, who first used it in a clock.

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