Find number abc
[2169] Find number abc - If a24c0 - 7c50c = 2cab find number abc. Multiple solutions may exist. - #brainteasers #math - Correct Answers: 62 - The first user who solved this task is Erkain Mahajanian
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Find number abc

If a24c0 - 7c50c = 2cab find number abc. Multiple solutions may exist.
Correct answers: 62
The first user who solved this task is Erkain Mahajanian.
#brainteasers #math
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Wake up call

A man and his wife were having some problems and were giving each other the silent treatment. The next week, the man realized that he'd need his wife to wake him at 5 a.m. for an early flight.

Not wanting to be the first to break the silence, he finally wrote on a piece of paper: "Please wake me at 5 a.m."

The next morning the man woke up, only to discover it was 9 a.m. and he'd missed his flight.

Furious, he was about to go and scream at his wife when he noticed a piece of paper by the bed that said: "It's 5 a.m. Wake up.

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Charles Martin Hall

Died 27 Dec 1914 at age 51 (born 6 Dec 1863).American chemist who invented the inexpensive electrolytic method of extracting aluminium from its ore, enabling the wide commercial use of this metal. While a young chemist, he experimented in a woodshed, intent upon finding a method for separating aluminum from its ore. At first, he was unsuccessful, but then realized that he needed a nonaqueous solvent for the aluminum oxide during electrolysis. On 23 Feb 1886, Hall found that molten cryolite (the mineral sodium aluminum fluoride) was a suitable solvent and using carbon electrodes with home-made batteries, he produced his first small globules of aluminum. By 1914, Hall's process had brought the cost of aluminium, once a precious metal used for fine jewelry, down to 18 cents a pound.«
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