Find number abc
[6460] Find number abc - If aaacb - b7711 = 31114 find number abc. Multiple solutions may exist. - #brainteasers #math - Correct Answers: 31 - The first user who solved this task is Nasrin 24 T
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Find number abc

If aaacb - b7711 = 31114 find number abc. Multiple solutions may exist.
Correct answers: 31
The first user who solved this task is Nasrin 24 T.
#brainteasers #math
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Flying Her Broom

A witch was flying her broom along when she noticed that all the other witches were flying on vacuum cleaners.
She thought, "Am I the only one still driving a stick?"

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Edison patent

In 1893, a patent for a "Roller for Crushing Ore or Other Material" was issued to Thomas A. Edison (U.S. No. 498,385). Edison had in mind crushing iron ore. "It is usual in ore crushing machines employing rollers to mount them in pairs on suitable supporting frames and to provide means for driving each pair, and for feeding material to be crushed separately to each pair of rollers and to provide separate means for pressing the rollers of each pair together. In the machine to be described I employ three or more rollers supported side by side in a frame and moveable towards or away from each other, instead of using them in pairs, and a single weight and lever serves to press all of said rollers together."Image: drawing of the side elevation of the apparatus.
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