SOLUTION: a bag contains 3 red and 6 yellow marbles. Two marbles are drawn without replacement. Determine the probability of picking two red marbles.
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Question 1039848: a bag contains 3 red and 6 yellow marbles. Two marbles are drawn without replacement. Determine the probability of picking two red marbles.
Answer by macston(5194) (Show Source): You can put this solution on YOUR website!
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There are 9 total marbles.
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The probability of picking a red first is 3/9 (or 1/3).
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This leaves 8 marbles with 2 red marbles.
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The probability of choosing a red marble second after a red first is 2/8 (or 1/4).
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The probability of picking two reds is
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