GRE Quantitative Practice Questions — Quantitative Comparison Format

Directions  |  Question  »  1   2   3   4   5   6   7   8

Question 1

A jar of 90 marbles contains marbles of three
different solid colors: red, blue and green. More
than half the marbles are either red or blue.
Quantity A

The number of blue
marbles in the jar

Quantity B

Twice the number of
green marbles in the jar

(A) Quantity A is greater.
(B) Quantity B is greater.
(C) The two quantities are equal.
(D) The relationship cannot be determined from the
             information given.

Answer and Analysis

The correct response is (D). Based on the scant information given, the jar could contain as few as one green marble with as many as 87 blue marbles. Or, it could contain as many as 44 green marbles with as few as one blue marble.