SOLUTION: A student is asked to answer 10 out of 13 questions on an exam. In how many ways can she select the questions to be answered?

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Question 481100: A student is asked to answer 10 out of 13 questions on an exam. In how many ways can she select the questions to be answered?
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi,

A student is asked to answer 10 out of 13 questions on an exam.

In how many ways can she select the questions to be answered?

    13C10 = 13!/(10!3!) = 13*12*11/2*3 = 13*2*11 =  286 ways