SOLUTION: How many subsets with exactly 8 elements are there for a set of 11 elements? So far I have tried using 11c8 but not sure if that is what the answer should be but I have also done

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Question 972164: How many subsets with exactly 8 elements are there for a set of 11 elements?
So far I have tried using 11c8 but not sure if that is what the answer should be but I have also done 11x10x9x8x7x6x5x4 for 8 elements but get a different answer.
Answers are 125,165,256,720,7920
Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
It is 11C8, which is 165
11!/8!3!= 11*10*9*8!/8!*6= 990/6=165