SOLUTION: Thirty-eight teams are in a tournament. If each team plays every other team only once, then how many games will occur?

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Question 132838: Thirty-eight teams are in a tournament. If each team plays every other team only once, then how many games will occur?
Answer by scott8148(6628) About Me  (Show Source):
You can put this solution on YOUR website!
each of 38 teams plays 37 other teams __ BUT - A playing B is the same as B playing A

so, 38*37/2