Replace the question mark with a number
[2909] Replace the question mark with a number - MATH PUZZLE: Can you replace the question mark with a number? - #brainteasers #math #riddles - Correct Answers: 142 - The first user who solved this task is Roxana zavari
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Replace the question mark with a number

MATH PUZZLE: Can you replace the question mark with a number?
Correct answers: 142
The first user who solved this task is Roxana zavari.
#brainteasers #math #riddles
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Long lines everywhere

There was a guy in high school that landed a date with the hottest girl in class for the prom.
First, he went to pick out a suit, and had to wait in a huge line.
Then he went and picked out flowers, and waited in a huge line.
Even when he called around for limo's, he had to wait in hold lines for all of them.
Getting ready for after the prom, there was even a long line at the pharmacy.
Finally the big night arrives and he takes his dance to the prom. When they get there, he asks his date if she wants him to get drink and she says yes.
Much to his surprise, there was no punch line.
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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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