Find number abc
[6801] Find number abc - If 8013b - 35a1b = bbbc0 find number abc. Multiple solutions may exist. - #brainteasers #math - Correct Answers: 27 - The first user who solved this task is Nasrin 24 T
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Find number abc

If 8013b - 35a1b = bbbc0 find number abc. Multiple solutions may exist.
Correct answers: 27
The first user who solved this task is Nasrin 24 T.
#brainteasers #math
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Defective nails...?

Two guys were doing construction on a house. One of them who was nailing down siding would reach into his nail pouch, pull out a nail, and then either toss it over his shoulder or nail it into the siding.

The other guy, figuring this was worth looking into, asked, "Why are you throwing those nails away?"

The first guy explained, "If I pull a nail out of my pouch and it's pointed towards me, I throw it away 'cause it's defective. If it's pointed toward the house, then I nail it into the siding."

The second guy was outraged. He yelled, "You moron! The nails pointed towards you aren't defective! They're for the other side of the house!"

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First U.S. patent for artificial teeth

In 1822, Charles M. Graham of N.Y. was issued the first U.S. patent for artificial teeth. The record, and its details, was lost in the Patent Office fire of 15 Dec 1836. Similarly lost, the patent by William R. Eagleson for setting natural and artificial teeth (4 Oct 1817). False teeth had been used since Colonial years, with various attempts to replace rotten teeth, which were extraacted to avoid illness. George Washington had at least four sets of false teeth (though none were wooden, despite a myth to that effect). His first dentures were made using human teeth set into carved ivory. In 1789, dentist John Greenwood of New York, made Washington a complete set from hippopotamus ivory, gold wire springs and brass screws holding human teeth. His one natural remaining tooth was a molar, and a hole was left for it.«[Image: Closeup of George Washington's dentures (c.1790) with human teeth and modeled teeth carved from cow teeth and elephant ivory.]
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