500
David's parents have given him the opportunity to play 2 sports this year: HOCKEY, BASKETBALL, FOOTBALL, SOCCER, BASEBALL, and TENNIS. How many combinations of sports can David choose?
What is 15. Hockey, Basketball Basketball, baseball
Hockey, Football Basketball, tennis
Hockey, soccer Football, soccer
Hockey, baseball Football, baseball
Hockey, tennis Football, tennis
Basketball, football Soccer, baseball
Basketball, soccer Soccer, tennis
Baseball, tennis