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Find number abc

If ab29c + a01cb = 12bcb7 find number abc. Multiple solutions may exist.

Correct answers: 20

The first user who solved this task is Djordje Timotijevic.

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A man went to an upscale Manha...

A man went to an upscale Manhattan restaurant and ordered soup du jour. When the waitress brought it out, he exclaimed, "What is this?"
The waitress said, "Why, it's bean soup."
The man said, "I don't care what it has been, what is it now?"

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Antonia Maury

Born 21 Mar 1866; died 8 Jan 1952 at age 85. Antonia Coetana de Paiva Pereira Maury was an American astronomer and ornithologist whose painstaking classifications of stars by their spectra included elaborate work on 681 bright stars of the northern skies published in Annals of Harvard College Observatory (1896), a significant early catalog. Yet she was unappreciated by her observatory director, Edward C. Pickering. Her work was important in Ejnar Hertzsprung's verification of the distinction between dwarf stars and giant stars, as now seen in the Hertzsprung-Russell diagram. After Pickering discovered the first spectroscopic binary star, Mizar, she was first to measure its period, 104 days. In 1889, she identified the second such star, Beta Aurigae, with a period of about 4 days. Antonia was the niece of astronomer Henry Draper, and the granddaughter of John William Draper who pioneered in the use of photography in astronomy.«

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