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Suppose there are three white marbles and three black marbles in a bag and you want to remove two marbles. What is the probability that you will select a white marble and then a black marble? Express your answer as a percent.
 2 years ago
 2 years ago
Suppose there are three white marbles and three black marbles in a bag and you want to remove two marbles. What is the probability that you will select a white marble and then a black marble? Express your answer as a percent.
 2 years ago
 2 years ago

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emechamBest ResponseYou've already chosen the best response.2
yeah 50% because there is an equal amount of marbles
 2 years ago

wseekayBest ResponseYou've already chosen the best response.0
ok, just wanted to be sure i was right
 2 years ago

phiBest ResponseYou've already chosen the best response.0
The problem says you want to remove two marbles. So you do not replace the marble back in the bag. This changes things. probability of getting a white marble on the first pick is # of white / total number = 3/6 =1/2 now there are 5 marbles left in the bag: 2 white and 3 black. Probability of drawing a black marble is 3/5 The probability of getting a white followed by a black is (1/2)*(3/5) = 3/10 or 30%
 2 years ago
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