SOLUTION: there are 5 teams in a tournament. how many different combination of teams can play?

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Question 1055017: there are 5 teams in a tournament. how many different combination of teams can play?
Answer by jorel555(1290) About Me  (Show Source):
You can put this solution on YOUR website!
Five teams, each one playing all four other teams, is 20 match-ups. Since each match up consists of two teams, then there are 1/2 x 20, or 10 different games played. ☺☺☺☺