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please answer it 7. A company has 20 Blu-ray players of which 6 are defective. If four are sold, what is the probability that: a.

please answer it
7. A company has 20 Blu-ray players of which 6 are defective. If four are sold, what is the probability that: a. all four are good? b. all four are defective? c. at least one is defective? If two are sold, what is the probability that: d. the second is defective given the first is good? e. the first is good given the second is defective

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