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Calculate the number 3189

NUMBERMANIA: Calculate the number 3189 using numbers [3, 4, 9, 6, 52, 913] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.

Correct answers: 30

The first user who solved this task is Djordje Timotijevic.

#brainteasers #math #numbermania

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Michel Chasles

Born 15 Nov 1793; died 18 Dec 1880 at age 87.French mathematician who, independently of the Swiss-German mathematician Jakob Steiner, elaborated the theory of modern projective geometry, the study of the properties of a geometric line or plane figure that remain unchanged when the figure is projected onto a plane from a point not on either the plane or the figure. In his text Traité de géométrie in 1852 Chasles discusses cross ratio, pencils and involutions, all notions which he introduced. Chasles was the victim of a celebrated fraud paying the equivalent of £20,000 for various letters from famous men of science and others which turned out to be forged.

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