Find number abc
If 87a57 - b723a = bc718 find number abc. Multiple solutions may exist.Correct answers: 21
The first user who solved this task is Nasrin 24 T.
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ConcordeIn 1970, the prototype British-built airplane Concorde 002 made its first supersonic flight (700 mph; 1,127 kph). A few months earlier, the French prototype, Concorde 001, had broken the sound barrier on 1 Oct 1969. Mach 2 was achieved by Concorde 001 on 4 Nov 1970, and by Concorde 002, a few days later on 12 Nov 1970. The combined number of supersonic flights by the two aircraft reached 100 by Jan 1971. |