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Re: arithmetic progression that's also a geometric one, with a known largest number, need advice
Posted:
Jan 28, 2005 11:20 AM


> >A progression that is both arithmetic and geometric must be constant. > > >Aristotle Polonium
True but irrelevant. In this problem, the geometric progression is a _permutation_ of the arithmetic progression. Suppose the arithmetic progression is (A,B,C) and the geometric progression is (A,C,B). Then there are nonconstant, nontrivial solutions.



