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Calculate the number 1401

NUMBERMANIA: Calculate the number 1401 using numbers [9, 6, 6, 3, 45, 808] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.

Correct answers: 18

The first user who solved this task is Sanja Šabović.

#brainteasers #math #numbermania

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Operation Clean-Up

Yesterday my husband thought he saw a cockroach in the kitchen. He sprayed everything down and cleaned thoroughly.
Today I’m putting a cockroach in the bathroom.

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Planetarium

In 1930, the Adler Planetarium and Astronomical Museum was opened to the public in Chicago, Illinois. A program using the Zeiss II star projector was presented by Prof. Philip Fox, who resigned from the staff of Northwestern Observatory to take charge of the new $1 million facility. Housed in a granite building, it was donated to the city by Max Adler, retired vice president of Sears, Roebuck & Co. He had been so impressed when he previously visited the world's first planetarium at the Deutsches Museum, Munich, Germany, that he resolved to construct America's first modern planetarium open to the public in his home city. Its site was within the fairgrounds of the Century of Progress Exposition in 1933-34, and was an outstanding attraction.«[Image left: The Zeiss II star projector used from 1930 until replaced in 1971 by a Zeiss IV projector. Image right: exterior]

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