SOLUTION: On a 5 question multiple-choice test, where each question has 3 answers, what would be the probability of getting at least one question wrong?
Give your answer as a fraction
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Give your answer as a fraction
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Question 1145303: On a 5 question multiple-choice test, where each question has 3 answers, what would be the probability of getting at least one question wrong?
Give your answer as a fraction
You can put this solution on YOUR website! On a 5 question multiple-choice test, where each question has 3 answers, what would be the probability of getting at least one question wrong?
Give your answer as a fraction
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Assuming the choices are random, ie, you don't know any of the answers and that all questions are answered:
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The probability of no wrong answers is 1 in 3^5 = 1 in 243
Any number of wrong answers = 1 - (1/243) = 242/243
