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Find number abc

If 57587 - 3c5b1 = a30ab find number abc. Multiple solutions may exist.

Correct answers: 1

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Did you ever notice?

Did you ever notice? When you put the two words "The" and "IRS" together it spells "THEIRS"?

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Ejnar Hertzsprung

Born 8 Oct 1873; died 21 Oct 1967 at age 94. Danish astronomer who classified types of stars by relating their surface temperature (or colour) to their absolute brightness. A few years later Henry Russell illustrated this relationship graphically in what is now known as the Hertzsprung-Russell diagram, which has become fundamental to the study of stellar evolution. In 1913 he established the luminosity scale of Cepheid variable stars.

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