What number comes next?
[4111] What number comes next? - Look at the series (123, 363, 1077, 3216, 9636, ?), determine the pattern, and find the value of the next number! - #brainteasers #math #riddles - Correct Answers: 79 - The first user who solved this task is Manguexa Wagle
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What number comes next?

Look at the series (123, 363, 1077, 3216, 9636, ?), determine the pattern, and find the value of the next number!
Correct answers: 79
The first user who solved this task is Manguexa Wagle.
#brainteasers #math #riddles
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Ballpen in space

When NASA first started sending up astronauts, they quickly discovered that ballpoint pens would not work in zero gravity.
To combat the problem, NASA scientists spent a decade and $12 billion to develop a pen that writes in zero gravity, upside down, underwater, on almost any surface including glass and at temperatures ranging from below freezing to 300 C.
The Russians used a pencil.

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Railroad car coupler

In 1897, a U.S. patent was issued to black American inventor, Andrew Jackson Beard for his invention of the "Jenny coupler," (U.S. No. 594,059). It does the dangerous job of hooking railroad cars together by simply allowing them to bump into each other, when "horizontal jaws engage each other to connect the cars." Beard's idea has probably saved countless lives and limbs. It remains in use today. He received $50,000 for the patent rights to the "Jenny Coupler." Beard was born a slave on a plantation in Alabama, shortly before slavery ended. He was a farmer, carpenter, blacksmith, a railroad worker, a businessman and finally an inventor. Beard's other patents included a steam driven rotary engine, and a double plow.
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