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Suppose you take an test for a course which consists of 5 multiplechoice questions, each worth 1 mark. To get an A, you need over

Suppose you take an test for a course which consists of 5 multiplechoice questions, each worth 1 mark. To get an A, you need over 80%. Suppose you choose your answer to each question at random. What is the probability that you get at least an A-? {enter your answer as a fraction in lowest terms, 9.3. 7/13)

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