# Math Help - Permutations word problem check

1. ## Permutations word problem check

In a nine team volleyball league, each team plays every other team twice, once at home and once away. How many games will be scheduled?

To solve this do I simply use the nPr formula where n=9 and r=2 ?
9P2=72

I'm not sure if this is right or not though. If it isn't I'd appreciate it if someone could show me how to do it correctly.

2. Look it is very simple.
If we have $n$ teams then there are $(n\times n) -n$ ways for $n$ teams to play each other in the order (Home, Away).