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Find number abc

If 3674c + a7a40 = 63b8c find number abc. Multiple solutions may exist.

Correct answers: 39

The first user who solved this task is Nasrin 24 T.

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Airplane bomb-drop tests

In 1910, the first trials in the U.S. investigating the use of an airplane to drop bombs were conducted by pilot Glenn H. Curtiss. He dropped lead dummy bombs on 500-ft by 90-ft targets from a height of 50-ft. His aim was successful 10 times out of 14 tries. For visibility, the missiles trailed coloured streamers. The tests were observed by Admiral William Wirt Kimball at Lake Keuka, Hammondsport, New York.*

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