SOLUTION: This problem involves combinations.
A student must answer nine of the thirteen questions on an exam. In how many ways can she choose the nine questions?
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Question 926914: This problem involves combinations.
A student must answer nine of the thirteen questions on an exam. In how many ways can she choose the nine questions?
Answer by Edwin McCravy(20055) (Show Source): You can put this solution on YOUR website!
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13 Choose 9 = 13C9 = 715
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