Replace the question mark with a number
[4000] Replace the question mark with a number - MATH PUZZLE: Can you replace the question mark with a number? - #brainteasers #math #riddles - Correct Answers: 169 - The first user who solved this task is H Tav
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Replace the question mark with a number

MATH PUZZLE: Can you replace the question mark with a number?
Correct answers: 169
The first user who solved this task is H Tav.
#brainteasers #math #riddles
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A man and his wife received a...

A man and his wife received a letter from their daughter who went to study overseas:
My beloved Parents, I miss you so much. I don’t know when I’m coming home, but it seems not anytime soon. It breaks my heart to think that by the time I get back you’ll be too old. So enclosed you will find a bottle of a potion I have invented. It will make you young, so when I return you’ll be the same age as I left you.
NOTE: “Please take only one drop”
So they opened the envelope and in it there is a bottle with a red potion. The husband looks at the wife and says: “You go first.”
So the wife opens the bottle and takes a drop, there after the husband follows. Indeed they do turn 5 years younger.
Years later the daughter returns home to find her mother young and beautiful, carrying a baby on her back.
The mother proceeds to tell her daughter how the potion worked and made her look young.
The daughter is delighted and asks about her father.
“Your father? Hmmm, my child, your father was so jealous that I was young and beautiful so he drank the whole bottle.”
“So where is he?”
“Oh, that’s him I have on my back."
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Hans Goldschmidt

Born 18 Jan 1861; died 25 May 1923 at age 62.German chemist who invented the thermite (alumino-thermic) process which was adopted worldwide for welding railroad and streetcar rails, and is still in use for on-site welding. The first track so welded was laid in Essen. This method evolved from his Goldschmidt reduction process that he began investigating in 1893 for the preparation of carbon-free metals. He used the reactions of oxides of certain metals with aluminum to yield aluminum oxide and the free metal. It has been applied to separate chromium, manganese, and cobalt from their oxide ores. Goldschmidt was also a co-inventor of sodium amalgam. His father, Theodor Goldschmidt, founded Chemische Fabrik Th. Goldschmidt which became the modern company, Degussa.«
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