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Calculate the number 5805

NUMBERMANIA: Calculate the number 5805 using numbers [9, 3, 2, 3, 75, 961] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.

Correct answers: 9

The first user who solved this task is Nasrin 24 T.

#brainteasers #math #numbermania

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Lost credit card

A man says to his friend: "My wife's credit card got stolen last week."

"That's a shame," says the friend: "have you told the police?"

"No way," says the man: "the thief is spending less than she did!"

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Herbert Henry Dow

Born 26 Feb 1866; died 15 Oct 1930 at age 64.[mp] who was a pioneer in the American chemical industry and founded the Dow Chemical Company (1896). Dow developed and patented an entirely new electrolytic method for extracting bromine from the prehistoric brine trapped underground at Midland, Mich. and in 1890 organized the Midland Chemical Company. The Dow process was remarkable in that it did not result in a salt by-product, that it operated on comparatively little fuel and it was the first commercially successful use of the direct-current generator in the American chemical industry. He next developed the electrolysis of sodium chloride in order to yield sodium hydroxide (caustic soda) and chlorine for bleaching powder. In 1916, Dow extracted magnesium, a very lightweight metal from brine, and quickly saw its importance as a structural metal. His first patent was issued in 1889. By 1933 he had over 90 patents. His diverse inventions included electric light carbons, steam and internal combustion engines, automatic furnace controls, and water seals, though most of his inventions were chemical in nature.

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