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Calculate the number 3690

NUMBERMANIA: Calculate the number 3690 using numbers [6, 2, 8, 4, 97, 236] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.

Correct answers: 19

The first user who solved this task is Manguexa Wagle.

#brainteasers #math #numbermania

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Phone Issues

I just love it when you are at a play or movie theater and they make the announcement, "Please silence your cell phones..."
Why do they have to announce that?
I mean how many people are carrying around a landline phone?

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Joseph Rogers Brown

Died 23 Jul 1876 at age 66 (born 26 Jan 1810).American inventor and manufacturer who made numerous advances in the field of fine measurement and machine-tool production. He perfected and produced a highly accurate linear dividing engine in 1850, and in the succeeding two years he developed a vernier caliper reading to thousandths of an inch and also applied vernier methods to the protractor. Brown's micrometer caliper, widely used in industry, appeared in 1867. He also invented a precision gear cutter in 1855 to produce clock gears, a universal milling machine in 1862, and, perhaps his finest innovation, a universal grinding machine (patented in 1877), in which articles were hardened first and then ground, thereby increasing accuracy and eliminating waste. Cofounded J.R. Brown & Sharpe in 1853.[Image: Brown's universal milling machine]

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