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Add 1, Get Geometric (Posted on 2013-11-23) Difficulty: 3 of 5
Prove that there exist infinitely many triplets (x,y,z) of distinct positive integers such that: x, y and z are in arithmetic sequence and x, y and z + 1 are in geometric sequence.

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  Subject Author Date
SolutionSOLUTIONAdy TZIDON2013-11-23 11:57:28
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