Find number abc
[5156] Find number abc - If c9c0a - bc081 = 15ba1 find number abc. Multiple solutions may exist. - #brainteasers #math - Correct Answers: 40 - The first user who solved this task is Djordje Timotijevic
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Find number abc

If c9c0a - bc081 = 15ba1 find number abc. Multiple solutions may exist.
Correct answers: 40
The first user who solved this task is Djordje Timotijevic.
#brainteasers #math
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Fun at the zoo!

Little Johnny wanted to go to the zoo and pestered his parents for days. Finally his mother talked his reluctant father into taking him.

"So how was it?" his mother asked when they returned home.

"Great," Little Johnny replied.

"Did you and your father have a good time?" asked his mother.

"Yeah, Daddy especially liked it," exclaimed Little Johnny excitedly, especially when one of the animals came home at 30 to 1!"

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Iodine discovery announced

In 1813, a new substance - iodine - was announced at the French Institute by Nicolas Clément, in the name of its discoverer, Bernard Courtois. In 1811, Courtois had observed violet crystals with a metallic lustre that condensed from the vapour rising from the mother liquor of seaweed ash being leeched in sulphuric acid at his family's saltpetre business in Dijon. Although he made a preliminary investigation of this substance, he lacked the resources to fully research it. For this he turned to C.B. Desormes and Nicolas Clément. They suspected the substance was similar to chlorine, but confirmation of its nature as an element was made independently by Joseph-Louis Gay-Lussac, who named it iode, and Humphry Davy (1814).[Ref: Clément, N., Découverte d'une Substance Nouvelle dans l'Vareck par M.B. Courtois. Ann. Chim., 88, 304-310, 1813.] [Image: iodine crystals deposited from vapour on a col glass surface.]
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