) Books are packed in piles each containing 20 books. Thirty five piles were examined for defective books and the results are given in the following table :
One pile was selected at random. What is the probability that it has :
(i) no defective books ?
(ii) more than 0 but less than 4 defective books ?
(iii) more than 4 defective books ?
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Answer:
3 one more than 4 defective books
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