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GRE- Quantitative Reasoning

QUESTION: 20

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): C
Explanation: The average (arithmetic mean) of any two numbers is half their sum. Regardless
of the values of x and y, Quantity A will always equal Quantity B:

QUESTION: 21
Three movie patrons of differing heights are standing in line, one behind the other, to purchase
tickets for the movie.

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: There are six possible sequences, and so Quantity
. Any of the three
patrons (including the one who is middle in height) could be first, second, or third in line; hence
Quantity

QUESTION: 22




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