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OpenStudy (anonymous):
Marco is taking a multiple-choice test. There are 5 choices for each question. Marco does not know how to answer one of the questions. If he guesses, what is the probability that he will guess the correct answer?
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OpenStudy (anonymous):
p(one correct ans.)=1/5 p(all correct ans.)=\[1/5\times 1/5\times 1/5\times 1/5\times 1/5\]
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