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Calculate the number 8573

NUMBERMANIA: Calculate the number 8573 using numbers [8, 2, 1, 9, 96, 771] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.

Correct answers: 10

The first user who solved this task is Nílton Corrêa De Sousa.

#brainteasers #math #numbermania

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Arj Barker: 4th of July

I read this on the Internet -- did you know that 4th of July is more popular in this country than in any other country in the whole world?

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John Wallis

Born 3 Dec 1616; died 8 Nov 1703 at age 86. British mathematician who introduced the infinity math symbol. Wallis was skilled in cryptography and decoded Royalist messages for the Parliamentarians during the Civil War. Subsequently, he was appointed to the Savilian Chair of geometry at Oxford in 1649, a position he held until his death more than 50 years later. Wallis was part of a group interested in natural and experimental science which became the Royal Society, so Wallis is a founder member of the Royal Society and one of its first Fellows. Wallis contributed substantially to the origins of calculus and was the most influential English mathematician before Newton.[DSB gives dates 3 Dec 1616 - 8 Nov 1703. EB gives 23 Nov 1616 - 28 Oct 1703.]

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