Question: Suppose a final exam contains 120 multiple-choice questions with 5 choices for each answer, and a poorly prepared student knows the answers to 60 questions

Suppose a final exam contains 120 multiple-choice questions with 5 choices for each answer, and a poorly prepared student knows the answers to 60 questions and guesses on the other 60. What is the probability that she will answer 60% of the questions correctly? More than 60% correctly?

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