Question 642970: A student has to sit for an examination consisting of 3 questions selected randomly from a list of 100 questions. To pass, he should answer all the three questions. What is the probability that the student will pass the examination, if he knows the answer to 90 questions on the list.
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! A student has to sit for an examination consisting of 3 questions selected randomly from a list of 100 questions. To pass, he should answer all the three questions. What is the probability that the student will pass the examination, if he knows the answer to 90 questions on the list.
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Ans: 0.9^3 = 0.729
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Cheers,
Stan H.
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