Calculate the number 4939
[7396] Calculate the number 4939 - NUMBERMANIA: Calculate the number 4939 using numbers [7, 2, 7, 4, 90, 460] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. - #brainteasers #math #numbermania - Correct Answers: 2
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Calculate the number 4939

NUMBERMANIA: Calculate the number 4939 using numbers [7, 2, 7, 4, 90, 460] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 2
#brainteasers #math #numbermania
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Serving Two Masters

A Mormon acquaintance once pushed Mark Twain into an argument on the issue of polygamy. After long and tedious expositions justifying the practice, the Mormon demanded that Twain cite any passage of scripture expressly forbidding polygamy."Nothing easier," Twain replied. "No man can serve two masters."
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Polypropylene

In 1999, in Bartlesville, Oklahoma, a plaque was placed on the site of the laboratory where the polymer polypropylene was invented, designating it a National Historic Chemical Landmark by the American Chemical Society. The first commercially successful use of the new material was in the Hula Hoop®. In 1951, J. Paul Hogan and Robert L. Banks, research chemists working for Phillips Petroleum Company, discovered the polymer unexpectedly during experiments with catalysts while trying to convert the natural gas components ethylene and propylene into compounds useful for gasoline. Later, they also developed a new catalytic process for making high-density polyethylene. Phillips soon invested in new plastic manufacturing plants.
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