Question: answer all the questions 4. Four light bulbs are selected at random without replacement from 16 bulbs, of which 7 are defective. Find the probability

answer all the questions 4. Four light bulbs are selected at

answer all the questions

4. Four light bulbs are selected at random without replacement from 16 bulbs, of which 7 are defective. Find the probability that a) none are defective. b) exactly one is defective. c) at least one is defective

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