Suppose a jar contains a total of 72 marbles. There are 11 red marbles, 21 blue marbles and 40 black marbles. If you reach in the jar and pull out 2 marbles at random at the same time, find the probability that neither is red.

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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Suppose a jar contains a total of 72 marbles. There are 11 red marbles, 21 blue marbles and 40 black marbles. If you reach in the jar and pull out 2 marbles at random at the same time, find the probability that neither is red.

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