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Find number abc

If 9a5a4 + 6bab9 = b5b5c3 find number abc. Multiple solutions may exist.

Correct answers: 4

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There are TWO distinctly...

There are TWO distinctly different holes up there. Not one all-purpose hole.

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Melvil Dewey

Died 26 Dec 1931 at age 80 (born 10 Dec 1851).American librarian who developed library science in the U.S., especially with his system of classification, the Dewey Decimal Classification (1876), for library cataloging. His system of classification (1876) uses numbers from 000 to 999 to cover the general fields of knowledge and designating more specific subjects by the use of decimal points. He was an activist in the spelling reform and metric system movements. Dewey invented the vertical office file, winning a gold medal at the 1893 World's Fair. It was essentially an enlarged version of a card catalogue, where paper documents hung vertically in long drawers.«

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