Find number abc
If 7a7bb - 7aab8 = bc7 find number abc. Multiple solutions may exist.Correct answers: 42
The first user who solved this task is Djordje Timotijevic.
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Heart surgeryIn 1952, the first surgical operation in the U.S. to expose the heart's mitral valve for a prolonged time was undertaken by Dr Forest Dewey Dodrill at the Harper Hospital, Detroit, Mich. The patient, a 41-year-old man, was provided with The Michigan Heart as a substitute for the lower left ventricle. |