team combinations for league scedule

i would appreciate any help i can get, i run a youth organization and i am stumped!!! please read below.

if I have 15 teams, each week there are 5 groups of 3 teams playing. In each group each team will play each other once. I need every team to play each other once and a maximum of twice. what combinations are there to fill out a schedule? Thanks Drew

Answer 1

[Star Strider]

I’m not certain what you want, but there are (according to nchoosek), 105 games that will have all teams playing all other teams. The unique combinations would be given by:

AllMatches = nchoosek([1:15], 2);

This takes all 15 teams and creates unique matches for two at a time. It would of course be up to you as to how you want to order them. You would have to be sure that each team (in each column for a given row) are not playing any other teams at the same time.