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N is a positive integer. Is n the square of an integer?

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N is a positive integer. Is n the square of an integer?

Post Fri Sep 22, 2017 10:58 am
N is a positive integer. Is n the square of an integer?

1) 4n is the square of an integer
2) n^3 is the square of an integer

The OA is D.

I couldn't determine that statement (2) alone is sufficient. How can I solve it?

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