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Find number abc

If ba42c - 70baa = 205a7 find number abc. Multiple solutions may exist.

Correct answers: 2

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A woman was found guilty in tr...

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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Annie Jump Cannon

Born 11 Dec 1863; died 13 Apr 1941 at age 77. American, deaf astronomer who specialized in the classification of stellar spectra. In 1896 she was hired at the Harvard College Observatory, remaining there for her entire career. The Harvard spectral classification system had been first developed by Edward C. Pickering, Director of the Observatory, around the turn of the century using objective prism spectra taken on improved photographic plates. In conjunction with Pickering Cannon was to further develop, refine, and implement the Harvard system. She reorganized the classification of stars in terms of surface temperature in spectral classes O, B, A, F, G, K, M, and catalogued over 225,000 stars for the monumental Henry Draper Catalogue of stellar spectra, (1918-24).

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