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Find number abc

If 92aca + c2255 = 12a6b9 find number abc. Multiple solutions may exist.

Correct answers: 33

The first user who solved this task is Djordje Timotijevic.

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Congreve rockets

In 1806, Congreve rockets were first used as destructive war implements at Boulogne, when they set the town on fire. Earlier in 1806, they been demonstrated in England in the presence of Mr. Pitt and several of the cabinet ministers. These carcase-rockets had been invented by Sir William Congreve about 1803. Improved rockets were made by Hales in 1846. Boxer's life-saving rope-carrying rockets, for communicating with stranded vessels were described in 1878.*

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