Find number abcIf 6a2c6 + 545cb = 121c66 find number abc. Multiple solutions may exist.
Correct answers: 35
The first user who solved this task is Djordje Timotijevic.
Ferdinand BerthoudBorn 19 Mar 1727; died 20 Jun 1807 at age 80.Swiss horologist and author of extensive treatises on timekeeping who became involved in the attempt to solve the problem of determining longitude at sea. His major achievement was his further development of an accurate and practical marine clock, or chronometer. (Such an instrument had previously been constructed in expensive and delicate prototypes by Pierre Leroy of France and John Harrison of England.) He made his first chronometer in 1754, which was sent for trial in 1761. Berthoud's improvements to the chronometer have been largely retained in present-day designs.