Calculate the number 411
[3682] Calculate the number 411 - NUMBERMANIA: Calculate the number 411 using numbers [2, 9, 5, 2, 15, 638] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. - #brainteasers #math #numbermania - Correct Answers: 26 - The first user who solved this task is Roxana zavari
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Calculate the number 411

NUMBERMANIA: Calculate the number 411 using numbers [2, 9, 5, 2, 15, 638] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 26
The first user who solved this task is Roxana zavari.
#brainteasers #math #numbermania
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A taxpayer received a strongly...

A taxpayer received a strongly worded "second notice" that his taxes were overdue. Hastening to the collector's office, he paid his bill, saying apologetically that he had overlooked the first notice.
"Oh," confided the collector with a smile, "we don't send out first notices. We have found that the second notices are more effective."
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Carl Bosch

Died 26 Apr 1940 at age 65 (born 27 Aug 1874). German industrial chemist who at BASF directed development of the industrial scale process for production of ammonia from atmospheric nitrogen. In 1908, Fritz Haber, a professor of chemistry had suggested that nitrogen and hydrogen gases could be combined using high temperatures, high pressure and catalysts that resulted in the Haber-Bosch process. By 1910, Alwin Mittasch (1869-1953), head chemist of the BASF ammonia research laboratory identified activated iron as a suitable catalyst. Bosch supervised creation of new technical solutions for high pressure operations. He shared (with Friedrich Bergius) the 1931 Nobel Prize for Chemistry for devising chemical high-pressure methods.«
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