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Find number abc

If a5ab1 + 2175c = 107c47 find number abc. Multiple solutions may exist.

Correct answers: 36

The first user who solved this task is Nílton Corrêa de Sousa.

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Married Women Vs Single Women

Why are married women heavier than single women?
Single women come home, see what's in the fridge and go to bed.
Married women come home, see what's in the bed and go to the fridge.

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African-American patents an ironing board

In 1892, a U.S. patent for a specialized “Ironing Board” was issued to the black American inventor, Sarah Boone, likely a former slave (No. 473,653). Her design featured a quite narrow padded board, curved to make it easier to iron sleeves. Numerous patents were issued before hers with similar titles. The first patent designated specifically as an “Ironing Table” was issued several decades earlier, in 1858, to W. Vandenburg and J. Harvey (No. 19,390). Unpatented styles evolved from long long before that, so no single inventor can be identified for the earliest ironing board. For example, J.H. Mallory's “Ironing Table,” patented 24 Oct 1871 (No. 120,296) more closely resembles today's adjustable-height, collapsible model.«

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