Given that if
there are x teams in a league and each team plays every other team
twice, then the total number of games (n) to be played is given by
[tex]n=x^2-x[/tex]
If a chess league has 15 teams the total number of games to be played if each team plays every other team twice is given by
[tex]n=15^2-15 \\ \\ =225-15=210[/tex]
