On a six-person bowling team, only four players bowl in any game. Refer to Math Notes box in this lesson for help with this problem.

1. How many different four-person teams can be made if the order in which they bowl does not matter?

   Answer (a):

   $_{6}C_{4}=15$

2. How many different bowling lineups of four players can be made if the order does matter?

   Hint (b):

   $n = 6$
   $r = 4$