Can you replace the question mark with a number?
[6344] Can you replace the question mark with a number? - MATH PUZZLE: Can you replace the question mark with a number? - #brainteasers #math #riddles - Correct Answers: 173 - The first user who solved this task is Nílton Corrêa de Sousa
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Can you replace the question mark with a number?

MATH PUZZLE: Can you replace the question mark with a number?
Correct answers: 173
The first user who solved this task is Nílton Corrêa de Sousa.
#brainteasers #math #riddles
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A woman goes into an antique s...

A woman goes into an antique shop and says to the owner, "When I was in here last week I saw a big mug with a flat head that holds a lot of beer. I'd like to buy it."
"Sorry," replied the owner, "but I can't sell you that."
"Why not?" asked the customer.
"Because that's my husband."
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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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