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19 September, 23:21

A quiz consists of 6 multiple choice questions. each question has 4 possible answers. a student is unprepared and guess answers by random. he passes if he gets atleast 3 questions right. what is the probability that he will pass

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  1. 20 September, 00:26
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    Thus, simply compute the probabilities for 4,5,6,7 as well, and then add. Alternatively, you can compute the probabilities for 0,1,2 correct answers, and subtract the total from 1, giving the same result.
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