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Find number abc

If c7a57 + ac7b2 = 812ab find number abc. Multiple solutions may exist.

Correct answers: 25

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

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Air photo

In 1911, the first photograph to be taken in the U.S. from an airplane was made. The photographer was Major H.A. "Jimmie" Erickson while flying in a Curtiss biplane piloted by Charles Hamilton over San Diego, California.[Image: a different pilot and Curtiss Pusher aircraft showing the flyer's conditions in 1911. Inset: a typical box camera of the era, a Kodak No.2 Bullseye.]

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