Calculate the number 725
[7909] Calculate the number 725 - NUMBERMANIA: Calculate the number 725 using numbers [4, 3, 1, 5, 75, 121] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. - #brainteasers #math #numbermania - Correct Answers: 0
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Calculate the number 725

NUMBERMANIA: Calculate the number 725 using numbers [4, 3, 1, 5, 75, 121] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 0
#brainteasers #math #numbermania
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A Lesson – How to Find the Best Airline Price

I couldn’t decide whether to go to Salt Lake City or Denver for vacation, so I called the airlines to get prices. “Airfare to Denver is $300,” the cheery salesperson replied.
“And what about Salt Lake City?”
“We have a really great rate to Salt Lake—$99,” she said, “but there is a stopover.”
“Where?”
“In Denver,” she said.

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Norman Heatley

Born 10 Jan 1911; died 5 Jan 2004 at age 92.English biochemist who solved problems in the extraction of penicillin from its mould, and paved the way for mass production. By D-Day of WW II, the Allies had an adequate stock to treat the wounded in danger of serious bacterial infections. Although it was Fleming who accidentally discovered penicillin (1928), it was Heatley who made it practical, making sufficient quantity by 1941 for its first clinical tests. His apparatus included porcelain "bedpans", milk churns and roasting trays to grow the bacteria. Also, an assay method he developed could precisely measure the activity of a sample of penicillin, in what became known as “Oxford units”. His production method used pie plates, cookie tins, and a porcelain vessel dubbed the bedpan.
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