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Calculate the number 1390

NUMBERMANIA: Calculate the number 1390 using numbers [5, 1, 7, 8, 61, 470] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.

Correct answers: 2

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Barbie and Paris

Q: What do Barbie and Paris Hilton have in common?

A: Both are blonde, brainless and made out of plastic.

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James Mason Crafts

Died 20 Jun 1917 at age 78 (born 8 Mar 1839).American chemist who with French chemist Charles Friedel, discovered an important organic carbon-chain addition to carbon-ring chemical synthesis techique, the Friedel-Crafts reaction (1877). This was a method of synthesizing hydrocarbons or ketones from aromatic hydrocarbons using aluminum chloride as a catalyst. Friedel and Crafts also did much work on the synthesis of organosilicon compounds.

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