SOLUTION: You volunteer to help drive children at a charity event to the zoo, but you can fit only 7 of the 20 children present in your van. How many different groups of 7 children can

Algebra ->  Permutations -> SOLUTION: You volunteer to help drive children at a charity event to the zoo, but you can fit only 7 of the 20 children present in your van. How many different groups of 7 children can      Log On


   

Question 1077058: You volunteer to help drive children at a charity event
to the zoo, but you can fit only 7 of the 20 children
present in your van. How many different groups of 7
children can you drive?
Answer by Edwin McCravy(20054) About Me  (Show Source):
You can put this solution on YOUR website!
It doesn't matter where they sit in the van, so order doesn't
matter, so we use combinations.

20 children Choose 7 = 20C7 = 77520

Edwin