A box of 15 spark plugs contains one that is defective. In how many ways can 4

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A box of 15 spark plugs contains one that is defective. In how many ways can 4 spark plugs be selected so that

(a) the defective one is selected;

(b) the defective plug is not selected?

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Related Book For  book-img-for-question

Probability And Statistics For Engineers

ISBN: 9780134435688

9th Global Edition

Authors: Richard Johnson, Irwin Miller, John Freund

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