Find number abcIf 7224b - c218c = 2aab1 find number abc. Multiple solutions may exist.
Correct answers: 26
The first user who solved this task is Djordje Timotijevic.
French-Atlantic cableIn 1869, the shore end of the French-Atlantic cable via St. Pierre was landed at Duxbury, Mass. [Ref.: Putnam's Monthly Magazine of American Literature, Science and Art, Vol. 14, No. 21, p.387.]