Find number abc
If c30bb + ccaa7 = 1b9ac9 find number abc. Multiple solutions may exist.Correct answers: 40
The first user who solved this task is Djordje Timotijevic.
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Edison patentIn 1891, Thomas A. Edison was issued U.S. patent No. 460122 for a "Process of and Apparatus for Generating Electricity" and No. 460123 for a "Phonogram-Blank Carrier." |