31-10-2017
Mathematics

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A single ball is taken at random from an urn containing 13 balls numbered 1 through 13. What is the probability of obtaining the following?

a ball different from 1

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31-10-2017

the probability of obtaining a 1 is 1/13, so the probability of not getting a 1, that is, the probability of getting a ball different from 1, is 1- (1/13)=12/13, which is 0.923

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