Calculate the number 1221
[6655] Calculate the number 1221 - NUMBERMANIA: Calculate the number 1221 using numbers [4, 1, 8, 5, 29, 998] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. - #brainteasers #math #numbermania - Correct Answers: 12 - The first user who solved this task is Nasrin 24 T
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Calculate the number 1221

NUMBERMANIA: Calculate the number 1221 using numbers [4, 1, 8, 5, 29, 998] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 12
The first user who solved this task is Nasrin 24 T.
#brainteasers #math #numbermania
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A man who worked in a cruise l...

A man who worked in a cruise liner as a magician had a parrot and every time the man did a trick the parrot yelled, “it’s in the pocket,” “it’s in the pocket,” the magician would do another trick and the parrot yelled, “it’s in the hat”, “it’s in the hat.”
One day during his act the cruise liner had a problem and the ship sunk. The parrot came up from the water and looking confused said; “NOW WHERE DID HE HIDE THE SHIP.”
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Photophone

In 1882, the photophone was demonstrated by Alexander Graham Bell and Charles Sumner Tainter. In their device, a mirrored silver disc was made to vibrate by speech from a speaking tube. Light reflected off the disc was focused by a parabolic dish onto a selenium photocell. The variations in the reflected light were converted into electrical signals carried to headphones.
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