Is $x$ positive? Statement I: $x^2=25$. Statement II: $x>0$. Choose the standard data-sufficiency option.

Question

Is $x$ positive?

Statement I: $x^2=25$.

Statement II: $x>0$.

Choose the standard data-sufficiency option.

Option A

A

Option B — Correct answer

B

Correct choice.

Option C

C

Option D

D

Option E

E

Explanation

Statement I is insufficient because $x$ could be $5$ or $-5$. Statement II alone directly answers the question, so the answer is B.

Chapter Mock 16: Data Sufficiency