SOLUTION: You want to choose 2 friends among your total 81 friends. You many ways can you do that?

Algebra ->  Permutations -> SOLUTION: You want to choose 2 friends among your total 81 friends. You many ways can you do that?      Log On


   

Question 854716: You want to choose 2 friends among your total 81 friends. You many ways can you do that?
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi,

81C2 = 3240 ways = 81%2A80%2F2