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Calculate the number 544

NUMBERMANIA: Calculate the number 544 using numbers [9, 2, 1, 8, 89, 329] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.

Correct answers: 31

The first user who solved this task is Sanja Šabović.

#brainteasers #math #numbermania

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Johan Gottlieb Gahn

Died 8 Dec 1818 at age 73 (born 19 Aug 1745).Swedish mineralogist and crystallographer who was born in an iron-ming town, and followed mining as a career. At the copper mine in Falun, he improved smelting methods and the use of by-products. He discovered manganese (1774), and also selenium. Gahn assisted his friend Carl Wilhelm Scheele (discoverer of chlorine) in finding phosphoric acid in bones. His limited published work included essays on the balance and use of the blowpipe as a convenient analytical tool. During the American Revolutionary War, one of his companies supplied copper for sheathing ships. Gahnite, a dark green to brown or black mineral, (ZnAl2O4), also called zinc spinel was named after Gahn.

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