SOLUTION: I am having so much trouble figuring out these string problems.I am just wondering if I have this one right. How many 8 bit strings contain exactly 2 1's. If its not right can I g

Question 403381: I am having so much trouble figuring out these string problems.I am just wondering if I have this one right. How many 8 bit strings contain exactly 2 1's. If its not right can I get the answer plus the math to figure it out right. Thanks, Kim
Heres what I have:
C(8,2) 8!/8!2!
8*7*6/2*1*6
56/2
answer 18
Answer by sofiyac(983) (Show Source): You can put this solution on YOUR website!
8 choose 2

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