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I need help with this question 3. Several economics students are unprepared for a multiple choice quiz with 20 questions, and all of their answers

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3. Several economics students are unprepared for a multiple choice quiz with 20 questions, and all of their answers are guesses. Each question has five possible answers, and only one of them is correct. Find the probability of getting 14 correct answers n -X P ( X ) = n CX

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