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Question: a carton of 18 rechargeable batteries contains three that are...

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A Carton of 18 rechargeable batteries contains three that are defective. In how many ways can an inspector choose 4 of the batteries and get exactly one defective battery?

A Carton of 18 rechargeable batteries contains three that are defective. In how many ways can an inspector choose 4 of the batteries and get exactly two defective battery?

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