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Calculate the number 2540

NUMBERMANIA: Calculate the number 2540 using numbers [6, 4, 9, 6, 38, 557] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.

Correct answers: 17

The first user who solved this task is Djordje Timotijevic.

#brainteasers #math #numbermania

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Goddess of wisdom

Is the goddess of wisdom against all we stand for?
Yes, she’s an athena.

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Herbert Hall Turner

Died 20 Aug 1930 at age 69 (born 13 Aug 1861).English astronomer who pioneered many of the procedures now universally employed in determining stellar positions from astronomical photographs. After serving as chief assistant at the Royal Greenwich Observatory for nine years, he spent most of his career as Savilian professor of astronomy at Oxford University. One of the leaders in the worldwide effort to produce an astrographic chart of the sky, he developed improved methods for obtaining both positions and magnitudes from photographic plates. Most of his later work was in seismology; he compiled and published worldwide earthquake data starting in 1918, and he discovered the existence of deep-focus earthquakes in 1922.

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