Can you replace the question mark with a number?
[6372] 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: 45 - The first user who solved this task is Nasrin 24 T
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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: 45
The first user who solved this task is Nasrin 24 T.
#brainteasers #math #riddles
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One day a little girl was sitt...

One day a little girl was sitting and watching her mother do the dishes at the kitchen sink. She suddenly noticed that her mother had several strands of white hair sticking out in contrast on her brunette head.
She looked at her mother and inquisitively asked, "Why are some of your hairs white, Mom?"
Her mother replied, "Well, every time that you do something wrong and make me cry or unhappy, one of my hairs turns white."
The little girl thought about this revelation for a while and then said, "Momma, how come ALL of grandma's hairs are white?"
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Stillson wrench

In 1876, a U.S. patent for the first practical pipe wrench - the Stillson wrench - was issued to Daniel C. Stillson of Somerville, Mass. (No. 184,993). In 1869, he had whittled a model out of wood, which he showed to his boss at the Walworth Company. He recognised the wooden pattern showed a new type of pipe wrench, superior to anything else in use at that time, and badly needed in the growing pipe industry. Stillson was instructed to test one built in steel. The test convinced the company owner that the concept was sound. Stillson obtained a patent, and offered to sell the patent for a small outright payment. Instead, the owner graciously advised Stillson accept royalties instead. Stillson thus earned far more in his lifetime.*
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