SOLUTION: Let A = { a , b , c , d , e , f , g } . How many four element subsets of A do not contain the element a?

Question 1122523: Let A = { a , b , c , d , e , f , g } . How many four element subsets of A do not contain the element a?
Answer by greenestamps(13200) (Show Source): You can put this solution on YOUR website!

There are 6 other elements in the set; you can choose any 4 of them to make a subset of 4 elements.

How many ways can you choose 4 of 6 things?

I would hope that if you are working a problem like this you know about the number "6 choose 4"....
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