Find number abc
If a24c0 - 7c50c = 2cab find number abc. Multiple solutions may exist.Correct answers: 62
The first user who solved this task is Erkain Mahajanian.
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Pendulum clock patentIn 1657, the first pendulum clock was patented by its inventor, Christiaan Huygens. Although others may have worked in this field before him, Huygens made major advances in building a practical clock. He needed time accuracy for his astronomical measurements. |