Posted by Anonymous on Wednesday, September 26, 2007 at 12:59am.
7. A bag contains 5 red marbles, 6 green marbles, and 9 blue marbles. Suppose 3 marbles are chosen without replacement. What is the probability of choosing a red, a blue, and a red in that order?:
A. 9/320
B. 5/152
C. 1/1280
D. 1/38
Please explain answer. Thanks

mathalgebra  PsyDAG, Wednesday, September 26, 2007 at 12:39pm
Find the probability of picking one of the colors. Since there is no replacement, the probability for the second would have a divisor of n1 and the third would have n2. The probability of all events occurring is found by multiplying the probabilities ofthe individual events.
I hope this helps. Thanks for asking.
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