Calculate product...
[1731] Calculate product... - Calculate product of four consecutive prime numbers with the sum of 220. - #brainteasers #math - Correct Answers: 53 - The first user who solved this task is Sanja Šabović
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Calculate product...

Calculate product of four consecutive prime numbers with the sum of 220.
Correct answers: 53
The first user who solved this task is Sanja Šabović.
#brainteasers #math
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Grandma Loves Oranges

A young teenaged girl was a prostitute and, for obvious reasons, kept it a secret from her Grandma. One day, the police raided a brothel and arrested a group of prostitutes, including the young girl.
The prostitutes were instructed to line up in a straight line on the sidewalk. Well, who should be walking in the neighborhood, but little old Grandma. The young girl became frantic.
Sure enough, Grandma noticed her young granddaughter and asked curiously, "What are you lining up for dear?" Not willing to let grandma in on her secret, the young girl said that some people were giving out free oranges and that she was lining up for some.
"Mmmm, sounds lovely," said Grandma, "I think I'll have some myself," she continued as she made her way to the back of the line. A police officer made his way down the line, questioning all of the prostitutes. When he got to Grandma at the end of the line, he was bewildered. "But, you're so old, how do you do it?"

Grandma replied," Oh, it's quite easy sonny, I just remove my dentures and suck 'em dry."

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Railroad car coupler

In 1897, a U.S. patent was issued to black American inventor, Andrew Jackson Beard for his invention of the "Jenny coupler," (U.S. No. 594,059). It does the dangerous job of hooking railroad cars together by simply allowing them to bump into each other, when "horizontal jaws engage each other to connect the cars." Beard's idea has probably saved countless lives and limbs. It remains in use today. He received $50,000 for the patent rights to the "Jenny Coupler." Beard was born a slave on a plantation in Alabama, shortly before slavery ended. He was a farmer, carpenter, blacksmith, a railroad worker, a businessman and finally an inventor. Beard's other patents included a steam driven rotary engine, and a double plow.
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