Data Sufficiency · Question 24 · Medium
Data Sufficiency question 24
Each question has two statements. Decide whether the data in the statements is sufficient to answer the question.
Question: What is the value of x?
I. x² = 49.
II. x³ = −343.
- Statement I alone is sufficient
- Statement II alone is sufficient
- Both statements together are needed
- Both statements together are not sufficient
Answer and explanation
Answer: B. Statement II alone is sufficient
Explanation: I allows x = 7 or x = −7, so it is not sufficient. II gives the single value x = −7, so II alone is sufficient.
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