Replace the question mark with a number
[4050] Replace the question mark with a number - MATH PUZZLE: Can you replace the question mark with a number? - #brainteasers #math #riddles - Correct Answers: 197 - The first user who solved this task is Thinh Ddh
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Replace the question mark with a number

MATH PUZZLE: Can you replace the question mark with a number?
Correct answers: 197
The first user who solved this task is Thinh Ddh.
#brainteasers #math #riddles
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The teacher noticed that Johnn...

The teacher noticed that Johnny had been day dreaming for a long time. She decided to get his attention."Johnny," she said, "If the world is 25,000 miles around and eggs are sixty cents a dozen, how old am I? "Thirty-four," Johnny answered unhesitatingly.
The teacher replied "Well, that's not far from my actual age. Tell me...how did you guess?"
Oh, there's nothing to it," Johnny said. "My big sister is seventeen and she's only half-crazy."
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John E. W. Keely

Born 3 Sep 1827; died 18 Nov 1898 at age 71.John Ernst Worrell Keely was a fraudulent American inventor. In 1873 he announced that he had discovered a new physical force that, if harnessed, would produce unheard-of power. He claimed, for example, to be able to produce from a quart of water enough fuel to move a 30-car train from Philadelphia to New York City. He began construction of an engine to perform this feat and by 1874 was able to give preliminary demonstrations of his machine. He made a great show of guarding the secret of the motor he was developing to obtain power "from intermolecular vibrations of ether," and scientists and engineers scoffed at his unverified claims.
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