SOLUTION: 7. A box contains five colored balls and four white balls. If three balls are drawn one-by-one, find the probability that they are all white if the draws are made as follows:
a. W
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Question 275128: 7. A box contains five colored balls and four white balls. If three balls are drawn one-by-one, find the probability that they are all white if the draws are made as follows:
a. With replacement
b. Without replacement
Answer by edjones(8007) (Show Source): You can put this solution on YOUR website!
a.
There are 9 balls.
(4/9)^3=64/729
.
b.
4/9 * 3/8 * 2/7 = 1/21
.
Ed
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