Find number abc
If 7a06b + b91c9 = 1c1a04 find number abc. Multiple solutions may exist.Correct answers: 63
The first user who solved this task is Djordje Timotijevic.
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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. |