Find number abc
If 7ca64 + 4cb0c = b26472 find number abc. Multiple solutions may exist.Correct answers: 53
The first user who solved this task is Djordje Timotijevic.
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Edison patentIn 1897, one of the various patents for a "Phonograph" was issued to Thomas Alva Edison (No.575151). It was one of several patents relating to his invention received by the patent office on 3 Dec 1890 that were issued on various dates between 27 Jun 1893 and 30 Sep 1898. |