Find number abc
[8153] Find number abc - If 9ab6c - a56c6 = 21a18 find number abc. Multiple solutions may exist. - #brainteasers #math - Correct Answers: 0
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Find number abc

If 9ab6c - a56c6 = 21a18 find number abc. Multiple solutions may exist.
Correct answers: 0
#brainteasers #math
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Three older ladies...

Three older ladies were discussing the travails of getting older.

One said, "Sometimes I catch myself with a jar of mayonnaise in my hand, in front of the refrigerator, and I can't remember whether I was taking it out or putting it away."

The second lady said, "Yes, sometimes I find myself on the landing of the stairs, and I can't remember whether I was on my up, or on my way down."

The third lady chimed in, "Well, I'm glad I don't have those problems. Knock on wood." With that, she rapped her knuckles on the table, then said, "That must be the door. I'll get it."

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Arthur Rudolf Hantzsch

Born 7 Mar 1857; died 14 Mar 1935 at age 78.German chemist who won fame at the age of 25 for devising the synthesis of substituted pyridines. He studied stereochemistry of such nitrogen compounds. He synthesised pyridine (1882), cumaron (1886) and thiazol (1889) and he gave a nomenclature of heterocyclic compounds. His investigations of triphenylmethane coloring materials led to progress in the spectrographic analysis, and also the theory of chemical indicators. He was also noted for his study of acids, in which he showed their properties depended on reaction with a solvent; and the electrical conductivity of organic compounds. From 1907 he studied cryoscopy and UV-spectroscopy.
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