Replace the question mark with a number
[3969] Replace the question mark with a number - MATH PUZZLE: Can you replace the question mark with a number? - #brainteasers #math #riddles - Correct Answers: 104 - The first user who solved this task is Djordje Timotijevic
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Replace the question mark with a number

MATH PUZZLE: Can you replace the question mark with a number?
Correct answers: 104
The first user who solved this task is Djordje Timotijevic.
#brainteasers #math #riddles
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A man has to leave the country...

A man has to leave the country on business and he entrusts with his best friend the job of keeping an eye on his wife. If anything out of the ordinary should occur, he was to be notified immediately.
After about a week of no news the business man received a telegram: "The man who comes to visit your wife every night didn't show up yesterday..."
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Octave Chanute

Died 23 Nov 1910 at age 78 (born 18 Feb 1832). American aeronautical engineer whose work and interests profoundly influenced Orville Wright and Wilbur Wright and the invention of the airplane. Chanute was a successful engineer who took up the invention of the airplane as a hobby following his early retirement. Knowing how railroad bridges were strengthened, he experimented with box kites using the same basic strengthening method, which he then incorporated into wing design of gliders. Through thousands of letters, he drew geographically isolated pioneers into an informal international community. He organized sessions of aeronautical papers for the professional engineering societies that he led; attracted fresh talent and new ideas into the field through his lectures; and produced important publications.
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