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Calculate the number 4939

NUMBERMANIA: Calculate the number 4939 using numbers [7, 2, 7, 4, 90, 460] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.

Correct answers: 2

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Not expecting to do well on th...

Not expecting to do well on the economics exam, Bill was heartened by the first question: In any given year, and to the nearest ton, how much wheat did the United States export?
Smiling confidently, he wrote, "In 1492, none."

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Seigneur (lord) De La Bigotiere François Viète

Died 13 Dec 1603 (born 1540).French mathematician who introduced the first systematic algebraic notation and contributed to the theory of equations. As Henry IV's cryptographer, he broke an elaborate cipher used by Spanish agents. In algebra, he made a number of innovations in the use of symbolism and several technical terms still in use (e.g., coefficient) were introduced by him. By using algebraic rather than geometric methods, Viète was able to solve a number of geometrical problems. In his In artem analyticam isagoge (1591) Viète introduced such basic algebraic conventions as using letters to represent both known and unknown quantities, while improving the notation for the expression of square and cubic numbers.

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