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1. could be 4 (yes perfect square) or 8 (not a perfect square) not suff.
2. x could be 14, 15, 16 these are all not perfect squares so the answer is 100% no not a perfect square. Sufficient?

Bunuel Why is the official answer E given statement 2 gives a definitive no?
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1. could be 4 (yes perfect square) or 8 (not a perfect square) not suff.
2. x could be 14, 15, 16 these are all not perfect squares so the answer is 100% no not a perfect square. Sufficient?

Bunuel Why is the official answer E given statement 2 gives a definitive no?

A perfect square is an integer which is the square of an integer. For example, 0 = 0^2, 1 = 1^2, 4 = 2^2, 9 = 3^2, 16 = 4^2, 25=5^2, ... are prefect square.
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