Calculate the number 811
[1660] Calculate the number 811 - NUMBERMANIA: Calculate the number 811 using numbers [5, 5, 4, 1, 28, 145] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. - #brainteasers #math #numbermania - Correct Answers: 30 - The first user who solved this task is Sanja Šabović
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Calculate the number 811

NUMBERMANIA: Calculate the number 811 using numbers [5, 5, 4, 1, 28, 145] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 30
The first user who solved this task is Sanja Šabović.
#brainteasers #math #numbermania
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Identify The Problem

A policeman had a perfect spot to watch for speeders, but was not getting many.
Then, he discovered the problem; a 10 year old boy was standing up the road with a hand painted sign which read, "SPEED TRAP AHEAD".
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Artturi Ilmari Virtanen

Born 15 Jan 1895; died 11 Nov 1973 at age 78.Finnish biochemist whose investigations directed toward improving the production and storage of protein-rich green fodder, vitally important to regions characterized by long, severe winters, brought him the Nobel Prize for Chemistry in 1945. The AIV method, named for his initials, was storing green fodder in an acid medium to prevent spoilage and retain nutritious nitrogenous material. He found that a mixture of hydrochloric and sulfuric acid was adequate as long as its strength was kept within certain precise limits (a pH of about four). In 1929, he found that cows fed such silage gave milk indistinguishable in taste from that of cows fed on normal fodder, while as rich in vitamins A and C.
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