SOLUTION: There are four black marbles and five red marbles in a bag if you reach in and randomly select 2 marbles what is the probability that both are red
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Question 1093606: There are four black marbles and five red marbles in a bag if you reach in and randomly select 2 marbles what is the probability that both are red Answer by rothauserc(4718) (Show Source):
You can put this solution on YOUR website! there are 9 marbles in total
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Probability(P) that first marble selected is red is 5/9
P that second marble selected is red is 4/8 = 1/2
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P that both marbles selected are red is (5/9) * (1/2) = 5/18
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