SOLUTION: A box contains 1 blue, 2 green, 1 red, and 2 yellow marbles. An experiment consists of randomly selecting two marbles without replacement. What is the probability of obtaining a ma
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Question 888176: A box contains 1 blue, 2 green, 1 red, and 2 yellow marbles. An experiment consists of randomly selecting two marbles without replacement. What is the probability of obtaining a marble that is yellow or blue? Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! A box contains 1 blue, 2 green, 1 red, and 2 yellow marbles. An experiment consists of randomly selecting two marbles without replacement. What is the probability of obtaining a marble that is yellow or blue?
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blue with anything:: 1*5 = 5 ways
yellow with anythng:: 1*5 = 5 ways
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# of random pairs: 6C2 = (6*5)/(1*2) = 15 ways
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P(blue or yellow with anything) = 10/15 = 2/3
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Cheers,
Stan H.
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