Replace the question mark with a number
[2563] Replace the question mark with a number - MATH PUZZLE: Can you replace the question mark with a number? - #brainteasers #math #riddles - Correct Answers: 638 - The first user who solved this task is Donya Sayah30
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Replace the question mark with a number

MATH PUZZLE: Can you replace the question mark with a number?
Correct answers: 638
The first user who solved this task is Donya Sayah30.
#brainteasers #math #riddles
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Lady trying to catch a ride

A woman comes home early, and finds her husband in bed with a girl.

She is furious, threatens to kill them both... the husband says:

- Believe me, darling, this is just a misunderstanding. I was driving home, and saw this young lady trying to catch a ride. So I decided to give her a lift. I ask her where she needs to go, and she tells me she wants to visit some relatives, but isn't sure about their address. So, I took her home so she could check our phonebook.

- Once there, I saw her dress is pretty ragged, so I decided to give her your old dress. Nearly two years that it's been hanging in the closet, and you never wore it.

- Then, I saw her shoes are also about to fall apart, so I gave her your old shoes, which have been doing nothing but collecting dust for three years. Of course, she said thanks, and then asked:

"Excuse me sir, but is there anything else in this house your wife never uses?"

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Ernst Florens Friedrich Chladni

Died 3 Apr 1827 at age 70 (born 30 Nov 1756).German physicist who is known as the “father of acoustics”for his mathematical investigations of sound waves. Chladni figures, seen when thin plates covered in sand at set in vibration, are complex patterns of vibration with nodal lines that remain stationary and retain sand. He demonstrated these to an audience of scientists in Paris in 1809. He measured the speed of sound in various gases by determining the pitch of the note of an organ pipe filled with different gases. To determine the speed of sound in solids, Chladni used analysis of the nodal pattern in standing-wave vibrations in long rods. He performed on the euphonium, an instrument he invented, made of glass and steel bars vibrated by rubbing with a moistened finger. He also investigated meteorites.
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