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Find number abc

If 97b0c - 2a612 = 6aa92 find number abc. Multiple solutions may exist.

Correct answers: 54

The first user who solved this task is Eugenio G. F. de Kereki.

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Traffic Court

A woman was found guilty in traffic court and when asked for her occupation she said she was a schoolteacher. The judge rose from the bench. "Madam, I have waited years for a schoolteacher to appear before this court."
He smiled with delight. "Now sit down at that table and write, 'I will not run a red light' five hundred times."

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Auguste Laurent

Died 23 Apr 1853 at age 45 (born 14 Nov 1807). French chemist who developed organic chemistry as a distinct science. For a while, he assisted Jean Dumas, and extended his work, understanding organic compounds as derivatives of hydrocarbon molecules. In crystallography he was influenced by René-Just Haüy. Laurent recognised that carbon atoms formed bonds based on a pyramid structure. Furthermore, against the opinion of many peers, he rejected the idea held by Jöns Berzelius that even organic molecules were formed from positively and negatively charged entities. Laurent showed (1836) that a supposedly positive-charge hydrogen atom could be replaced by a supposedly negative-charge chlorine atom. He recognised families of organic compounds with characteristic groups. He died in middle age from tuberculosis.«

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