A computer retail store has 15 personal computers in stock. A buyer wants to purchase 3 of them. Unknown to either the r

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answerhappygod
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A computer retail store has 15 personal computers in stock. A buyer wants to purchase 3 of them. Unknown to either the r

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A computer retail store has 15 personal computers in stock.
A buyer wants to purchase 3 of them. Unknown to either the retail
store or the buyer, 3 of the computers in stock have defective
hard drives. Assume that the computers are selected at random.
(a) In how many different ways can the 3 computers be
chosen?
answer:
(b) What is the probability that exactly one of the
computers will be defective?
answer:
(c) What is the probability that at least one of the
computers selected is defective?
answer:
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