【實用教育app】ComboCalc|最夯免費app-綠色工廠好玩App

This app calculates all unique combinations for nCr (n-choose-r) for populations between 2 and 10. The user can enter names for population members i.e. team names, or use the default values 0 through 9. The program is useful for matching teams in a league or simply determining all possible samples in a population.