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Calculate the number 2398

NUMBERMANIA: Calculate the number 2398 using numbers [1, 9, 6, 4, 71, 212] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.

Correct answers: 14

The first user who solved this task is Djordje Timotijevic.

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Crazy people don't know they are crazy

Crazy people don't know they are crazy, I know i'm crazy therefore i'm not crazy. Isn't that crazy.

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US Weights and measures

In 1873, the American Metrological Society was formed in New York City to improve systems of weights, measures and money. Its activities eventually extended with a committee considering units of force and energy, and another concerned with the adoption of Standard Time for the U.S. On 30 Dec 1884, at the meeting of the American Metrological Society at Columbia College in New York City, Charles S. Peirce read a paper on the determination of gravity. He also participated in a discussion of the adequacy of the standards of weight and measure in the United States and pointed out some of the deficiencies in the current system. As a result of his revelations, the Society passed a resolution recommending the appointment of a committee to advise Congress on the need for establishing an efficient bureau of standards.[Image: Cover of the Proceedings of the American Metrological Society, Vol. 1.]

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