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GRE- Quantitative Reasoning

QUESTION: 12

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: The centered information establishes that Quantity B, pq, must be negative,
because the product of a positive number and a negative number is always negative. As for
Quantity A, try substituting some simple numbers for p and q. If p = 1 and q = -1, then p + q = 0
while pq = -1, and therefore
Thus, which quantity is greater depends on the values of p and q.


QUESTION: 13

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): B
Explanation: The range of D = 10 - 3 = 7. The median of D = the arithmetic mean of 6 and 9
(the two middle terms) = 7.5.





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