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Find number abc

If c310c + c07ba = 1b3bc4 find number abc. Multiple solutions may exist.

Correct answers: 36

The first user who solved this task is Djordje Timotijevic.

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Brahe finds comet

In 1590, Tycho Brahe discovered a comet in the constellation Pisces, the Fish. He had previously shown, by measurements of parallax for a comet he observed in 1577, that comets were further away than the Moon. This contradicted the teachings of Aristotle (who held comets to be a phenomenon within the atmosphere), and Brahe was the first to prove the truth.

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