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Find number abc

If 7b3bc + 5a306 = c336b7 find number abc. Multiple solutions may exist.

Correct answers: 2

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Chester Moor Hall

Died 17 Mar 1771 at age 67 (born 9 Dec 1703).English jurist and mathematician who invented the achromatic lens, which he utilized in building the first refracting telescope free from chromatic aberration (colour distortion).

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