Calculate the number 613
[6170] Calculate the number 613 - NUMBERMANIA: Calculate the number 613 using numbers [2, 8, 9, 4, 39, 538] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. - #brainteasers #math #numbermania - Correct Answers: 17 - The first user who solved this task is Nílton Corrêa de Sousa
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Calculate the number 613

NUMBERMANIA: Calculate the number 613 using numbers [2, 8, 9, 4, 39, 538] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 17
The first user who solved this task is Nílton Corrêa de Sousa.
#brainteasers #math #numbermania
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The Lawn

A guy is trying to relax at home, but his wife keeps nagging him to mow the lawn. Finally, in between nags he blurts out, "Answer just this one question for me."
She pauses momentarily, and he takes this opportunity to say, "You know, a Deer, a Cow, and a Horse, all eat grass. But a Deer's excretions are pellets, while a Cow makes flat pies, and a Horse makes clumps...why is that?"
His wife says, "I don't know."
He replies, "Well then, how can you bring up the subject of the lawn, when it's obvious you don't know sh*t?"    

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Elmer Sperry

Born 12 Oct 1860; died 16 Jun 1930 at age 69.Elmer Ambrose Sperry was an American engineer and inventor who devised the gyrocompass. In the 1890's he made useful inventions in electric mining machinery, and patent electric brake and control system for street- or tramcars. In 1908, he patented the active gyrostabilizer which acted to stop a ship's roll as soon as it started. He patented the first gyrocompass designed expressly for the marine environment in 1910. This "spinning wheel" gyro was a significant improvement over the traditional magnetic compass of the day and changed the course of naval history. The first Sperry gyrocompass was tested at-sea aboard the USS Delaware in 1911 and established Sperry as a world leader in the manufacture of military gyrocompasses for the next 80 years.
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