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Ok, this one was in my kaplan math workbook
, but there must be a misprint in the answers, because the answer to this one was omitted...
S is a set of positive integers such that if integer x is a member of S, then both \(x^2\) and \(x^3\) are also in S. If the only member of S that is neither the square nor the cube of another member of S is called the source integer, is 8 in S?
(1) 4 is in S and is not the source integer
(2) 64 is in S and is not the source integer
I think the answer is E...what does everyone else think?