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Calculate the number 2268

NUMBERMANIA: Calculate the number 2268 using numbers [5, 5, 2, 1, 13, 461] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.

Correct answers: 1

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Herbert Friedman

Born 21 Jun 1916; died 9 Sep 2000 at age 84.American astronomer who made seminal contributions to the study of solar radiation. He joined the Naval Research Laboratory in 1940 and developed defense-related radiation detection devices during WW II. In 1949, he obtained the first scientific proof that X rays emanate from the sun. When he directed the firing into space of a V-2 rocket carrying a detecting instrument. Through rocket astronomy, he also produced the first ultraviolet map of celestial bodies, and gathered information for the theory that stars are being continuously formed, on space radiation affecting Earth and on the nature of gases in space. He also made fundamental advances in the application of x rays to material analysis.

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