Question: On a multiple choice exam,there are three questions and each question has 5answers,only one of which is correct.A student makes random guessingon all three questions.

On a multiple choice exam,there are three questions and each question has 5answers,only one of which is correct.A student makes random guessingon all three questions.

(a) What is the probability that all three answers are correct?

b) What is the probability that at least one answer will be non-correct?

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