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An instructor gives his class a set of 13 problems with the

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An instructor gives his class a set of 13 problems with the information that the next quiz will consist of a random selection of 3 of them. If a student has figured out how to do 9 of the problems, what is the probability the he or she will answer correctly

(a) All 3 problems?

(b) At least 2 problems?

Reference no: EM13627317

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