ISEE Quantitative Comparisons Question 130: Answer and Explanation
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Question: 130
5. 
- A. The quantity in Column A is greater.
- B. The quantity in Column B is greater.
- C. The two quantities are equal.
- D. The relationship cannot be determined from the information given.
Correct Answer: D
Explanation:
The answer is D
When x > 1, 
< x. When x = 0 or 1, = x. When 0 < x < 1, > x. As x can be any non-negative number, the relative size of the columns cannot be determined.
Plug in an easy value for x, such as x = 4. In this case, the value in Column B is bigger, so the value in Column A is not always bigger, and the values in the two columns are not always equal. Eliminate choices (A) and (C). Now plug in x = 0. The values in the two columns are the same, which means that the value in Column A is not always bigger. Eliminate choice (B).