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August 5, 2015

Homework Help: Probability

Posted by Tom on Wednesday, May 21, 2008 at 6:46pm.

An urn contains 7 red marbles labeled {1,2,3,4,5,6,7} and 5 green marbles labeled {1,2,3,4,5}. Four marbles are pulled out at once. What is the probability that


A. All four marbles are red?
B. More of the marbles are green than red?
C. Both red and green marbles are present?
D. Two of the marbles chosen are both labeled "5"?

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