Question: A multiple-choice exam has5 questions. Each question has 3 choices, one of which is the right answer. A student completes the exam by guessing.

A multiple-choice exam has5 questions. Each question has 3 choices, one of

A multiple-choice exam has5 questions. Each question has 3 choices, one of which is the right answer. A student completes the exam by guessing. What is the probability that student gets 4 or more correct answers just by guessing?

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