A bin contains a total of 20 batteries, of which 6 are defective. If you select 2

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A bin contains a total of 20 batteries, of which 6 are defective. If you select 2 batteries at random, without replacement, determine the prob-ability that 

(a) Both of batteries are defective.

(b) At least one battery is not defective.

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Related Book For  answer-question

A Survey of Mathematics with Applications

ISBN: 978-0134112107

10th edition

Authors: Allen R. Angel, Christine D. Abbott, Dennis Runde

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