For a 3-person relay race, a coach can choose from 4 of his top runners.how many different 3- person teams can he choose ? Use the act it out strategy.
2 answers
I'm not 100 percent sure but I believe it goes like this . The coach could have runners A B C run. He could also have runners A B D run it . Yet he could have runners C A D run . He also may have Runners B D C run.
That is simply 4 "choose" 3 or C(4,3) = 4!/(3!1!) = 4
3 answers