Let's say there are 10 teams: A-J. Only 1 team wins, others lose. Probability of any team to win is unknown (different for each team) and to be calculated. Not all teams participate in each game.
There were 10 games. Teams C-J participated in all of them. Team B participated in all 10 games and won 3 times. Team A participated in 4 games and won 3 times.
What is the probability of team A win?
What is the probability of team B win?