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GRE- Quantitative Reasoning

Answer(s): C
Explanation: The expression in Column A is a perfect cube, and the expression in Column B is
a perfect square:

As you can see, Quantity A equals Quantity B.

QUESTION: 71
The total weight of m bricks, all of which are equal in weight, is n pounds.

A. The quantity in Column A is greater;
B. The quantity in Column B is greater;
C. The quantities are equal;
D. The relationship cannot be determined from the information given.
Answer(s): D
Explanation: It is entirely possible that m = n (for example, in the case of 5 bricks weighing 1
pound each). If so, then
, and Quantity A = Quantity B. However, if the total number of
bricks differs from the total pound weight (for example, in the case of 5 bricks weighing 2
pounds each), then
and Quantity A Quantity B.

QUESTION: 72




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