How many different groups of 5 problems can be chosen

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Reference no: EM13186143

One professor grades homework by randomly choosing 5 out of 15 homework problems to grade.

(a) How many different groups of 5 problems can be chosen from the 15 problems? groups

(b) Probability extension: Jerry did only 5 problems of one assignment. What is the probability that the problems he did comprised the group that was selected to be graded? (Round your answer to four decimal places.)

Reference no: EM13186143

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