math
posted by Sharon on .
5 basketball teams are in a tournament and each team will play each other one time how many games will be played at the end?

5 teams: ABCDE
These teams will play each other:
AB AC AD AE
BC BD BE
CD CE 
Sorry, I didn't finish and I accidentally hit enter.
AB AC AD AE
BC BD BE
CD CE
DE
(E has already played all of the teams.)
That's 10 games. 
10

A team does not play against itself so the answer for 5 teams is:
4 + 3 +2 + 1 = 10games