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You are planning to guess on a multiple choice question quiz. Each question has five options...

You are planning to guess on a multiple choice question quiz. Each question has five options and you are just as likely to guess any of them but only one option is correct. Your guess on a question does not affect your guess on any other. What is the probability that you will guess exactly 6 questions correct?

Math   Statistics-And-Probability   
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Answer #1

First term in Probability expression is Combination term C(n, 6)

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