SOLUTION: a student is asked to answer 9 out of 12 questions on an exam.In how many ways can she select the questions to be answered

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Question 949060: a student is asked to answer 9 out of 12 questions on an exam.In how many ways can she select the questions to be answered
Answer by amarjeeth123(569) About Me  (Show Source):
You can put this solution on YOUR website!
No of ways=12!/(9!*3!)=(12*11*10)/(1*2*3)=220 ways
Answer=220 ways