Question: What is the probability that Sue gets a B grade of at least 4 out of 5 on a 5-question multiple choice test (with answers

What is the probability that Sue gets a B grade of at least 4 out of 5 on a 5-question multiple choice test (with answers A - D for each question) by guessing at random? What is the sample space? What are the events that satisfy the condition of at least 4 out of 5 correct answers?

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