SOLUTION: in a bag there are 4 red marbles, 2 yellow marbles and 7 brown marbles. 1.find the probability of selecting one red marble. 2.find the probability of selecting 1 red, i yellow

Question 593116: in a bag there are 4 red marbles, 2 yellow marbles and 7 brown marbles.
1.find the probability of selecting one red marble.
2.find the probability of selecting 1 red, i yellow and one brown marble in succession without replacement.
Answer by htmentor(1343) (Show Source): You can put this solution on YOUR website!
1. There are 4 red marbles out of a total of 13 marbles.
So P(1 red) = 4/13
2. The probability of selecting 1 red, 1 yellow and 1 brown in succession is the product of the individual probabilities.
P(red) = 4/13 from 1.
For the selection of the yellow marble, there are still 2 yellow marbles and one fewer total marbles to choose from:
P(yellow) = 2/12
Likewise, P(brown) = 7/11
So P(1r,1y,1b) = 4/13*2/12*7/11 = 0.0326
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