Tournament Scheduling: Combinatorics Ideas

[student3]

Hi!
Do you have any idea(s) on how to make a tournament scheduling by combinatorics?
or any kind of scheduling with the use of combinatorics?

 

[HallsofIvy]

What kind of tournament? A "round robin" tournament, where each contestant meets every other contestant once? A "double round robin" tournament, where each contestant meets every other contestant twice? A "single elimination tournament" where a contestant is out as soon as he/she loses? A "double elimination tournament" where a contestant is out as soon as he/she loses twice?