Find number abc
If 1bbcb + 471a4 = b373c find number abc. Multiple solutions may exist.Correct answers: 23
The first user who solved this task is Nílton Corrêa de Sousa.
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Adding machineIn 1872, the first U.S. patent for an adding machine capable of printing totals and subtotals, called a "calculating machine," was issued to E.D. Barbour of Boston, Mass. However, it was not practical. (No. 133,188) |