Bunuel wrote:

Is x greater than y?

(1) y > 0

(2) x = y^2

We need to determine whether x > y.

Statement One Alone:y > 0

Since we do not know anything about x, statement one is not sufficient to answer the question.

Statement Two Alone:x = y^2

Using the information in statement two, we see that x could be greater than or less than y. For example, if x = 1/4 and y = 1/2, then x is not greater than y. However, if x = 4 and y = 2, then x is greater than y. Statement two alone is not sufficient to answer the question.

Statements One and Two Together:Using the information from statements one and two, we still cannot determine whether x is greater than y. Once again, if x = 1/4 and y = 1/2, then x is not greater than y. However, if x = 4 and y = 2, then x is greater than y.

Answer: E

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