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Last Updated on May 11, 2023
GMAT OFFICIAL GUIDE DS –
Solution:
We need to determine whether x < 5.
Statement One Alone:
x^2 > 5
If x = 3, then x is less than 5. However, if x = 6, then x is not less than 5. Statement one alone is not sufficient to answer the question.
Statement Two Alone:
x^2 + x < 5
Thus, we have x < 5 – x^2. Since x^2 is nonnegative, we have 5 – x^2 ≤ 5. Since x < 5 – x^2 and 5 – x^2 ≤ 5, we have x < 5.
Answer: B
