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Richard has been given a 7-problem multiple-choice quiz in his history class. Each problem has five answers, of which only one is correct. Since Richard has not attended the class recently, he doesn't know any of the answers. Assuming that Richard guesses on all 7 problems, find the probability that he will answer no more than 3 problems correctly? Round your answer to the nearest thousandth.

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Statistics and Probability, Statistics

Category:- Statistics and Probability
Reference No.:- M9123324

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