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Find number abc

If 72b27 - ac9b5 = aabc2 find number abc. Multiple solutions may exist.

Correct answers: 35

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

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Flu?

The patient sat there looking ill and asked, ''Flu?''
The doctor replied, ''No, I came on my bicycle actually!''

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Boron

In 1808, Humphry Davy announced in a paper read to the Royal Scociety that he had separated the element boron. Davy had taken boric acid with potassium in a copper tube and heated it to dull redness for fifteen minutes. The resulting olive-gray powder did not effervesce with water or acids, indicating that the potassium had disappeared. However, working independently, French chemist, Joseph Louis Gay-Lussac had announced the same accomplishment nine days earlier, on 21 Jun 1808.«*

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