 # Probability GRE Practice Questions

This lesson is part of a series of practice test questions for the quantitative reasoning section of the GRE revised General Test.

These are the directions for the Quantitative Comparison Questions.

Directions: Compare Quantity A and Quantity B, using additional information centered above the two quantities if such information is given, and select one of the following four answer choices:
(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.

Example 1:
Car X can come with any of these 5 additional features: sunroof, stereo, tinted windows, leather seats and cruise control.
Quantity A: Number of different combinations possible
Quantity B: 25
Example 2:
Events A and B are independent.
The probability that events A and B both occur is 0.6
Quantity A: The probability that event A occurs
Quantity B: 0.3

Example 3:
Quantity A: Number of different triangles possible using the given points as vertices.
Quantity B: 42
Example 4:
A box contains only yellow, blue and red balls. 3/11 of the balls are red, and 3/4 of he remaining balls are blue. A ball is randomly selected from the box.
Quantity A: Probability that the ball is blue
Quantity B: Probability that the ball is red or yellow.

Try the free Mathway calculator and problem solver below to practice various math topics. Try the given examples, or type in your own problem and check your answer with the step-by-step explanations.  