Calculate the number 552
[6107] Calculate the number 552 - NUMBERMANIA: Calculate the number 552 using numbers [5, 3, 9, 5, 83, 304] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. - #brainteasers #math #numbermania - Correct Answers: 16 - The first user who solved this task is Nílton Corrêa de Sousa
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Calculate the number 552

NUMBERMANIA: Calculate the number 552 using numbers [5, 3, 9, 5, 83, 304] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 16
The first user who solved this task is Nílton Corrêa de Sousa.
#brainteasers #math #numbermania
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Mom, what's sex?

A little boy returning home from his first day at school said to his mother, "Mom, what's sex?"

His mother, who believed in all the most modern educational theories, gave him a detailed explanation, covering all aspects of the tricky subject.

When she had finished, the little lad produced an enrollment form which he had brought home from school and said, "Yes, but how am I going to get all that into this one little square?"

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Air brake

In 1869, the first U.S. patent for an air brake was issued to George Westinghouse of Schnectady, N.Y., entitled “Improvement in steam-power-brake devices” (No. 88,929). It was used on an experimental train carrying officials of the Panhandle Railroad. Although it demonstrated its value, it was not entirely successful because it took longer for the air to reach the last cars of the train, so each car stopped at a different time. This was corrected with his “triple air brake” patent issued 5 Mar 1872 (No. 124,405). Fifteen years later, he invented an automatic brake.
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