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Calculate the number 258

NUMBERMANIA: Calculate the number 258 using numbers [5, 5, 2, 2, 80, 560] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.

Correct answers: 14

The first user who solved this task is Djordje Timotijevic.

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N. Howell Furman

Born 22 Jun 1892; died 2 Aug 1965 at age 73.American analytical chemist whose analytical separation of uranium contributed to the development of the atomic bomb. He developed special techniques for preparing the bomb project materials, notably the sampling and analysis necessary for producing pure uranium metal. He also devised a new method of estimating traces of metals in various substances and assisted in developing an ether extraction process for the preparation of uranium oxide of the extreme purity required. His special methods also made possible greater utilization of tracer techniques with radioactive and stable isotopes.

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