MATH PUZZLE: Can you replace...
[2577] MATH PUZZLE: Can you replace... - MATH PUZZLE: Can you replace the question mark with a number? - #brainteasers #math #riddles - Correct Answers: 373 - The first user who solved this task is Roxana zavari
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MATH PUZZLE: Can you replace...

MATH PUZZLE: Can you replace the question mark with a number?
Correct answers: 373
The first user who solved this task is Roxana zavari.
#brainteasers #math #riddles
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My wife and her friend Karen w...

My wife and her friend Karen were talking about their labor-saving devices as they pulled into our driveway. Karen said, “I love my new garage-door opener.”
“I love mine too,” my wife replied, and honked the horn three times. That was the signal for me to come out and open the garage.
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Patent for cotton spinning

In 1791, a U.S. patent for spinning cotton by water power was issued to William Pollard of Philadelphia. In his petition, Pollard had stressed usefulness and an important economic value to the U.S., rather than novelty. Actual details of any machine were vague and secondary his claims being of deserving character. Pollard was one of three British immigrants that sought exclusive rights to introduce into America cotton spinning machines based on those devised by Richard Arkwright in England. By Jun 1791, Pollard's factory was in full operation, and is said to be the first water frame built in that city. However, it was not successful, and for that reason may have in effect retarded the growth of the industry in Philadelphia.«
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