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Find number abc

If 21a4c + c10c2 = b2a7b find number abc. Multiple solutions may exist.

Correct answers: 37

The first user who solved this task is Djordje Timotijevic.

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Triton

In 1989, the U.S. space probe Voyager 2 fired its thrusters to bring it closer to Neptune's mysterious moon Triton. This later photograph (left) shows a false-color image of Triton, taken two days before closest approach. At 2,700 km diameter, Triton is Neptune's largest satellite. The smallest features resolvable in this image are about 47 km across. The image is a composite of three images taken through ultraviolet, green, and violet filters.

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