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Find number abc

If 9bb2c - 8ba1b = 1aba9 find number abc. Multiple solutions may exist.

Correct answers: 2

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Radioactivity

In 1896, Henri Becquerel reported his discovery of the penetrating rays of a uranium compound to the French Academy of Sciences. The photographic plate, fogged by these rays, showing the outline of a metal cross lying between the compound and the plate, is the first recognition of the effects later known as radioactivity.

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