Every time
20
It is not divided into regions. There is one Premier League, with 20 teams. Teams from England and Wales play in it.
2 teams from the championship League go up to the Premier League at the end of the season. Their places in the Championship League go to 3 teams from the Premier League.
there is 21 teams in the premier league if not there is either 22,21or20
There are 20 teams in the E.P.L.
There are 18 clubs, and 12 teams.
English Premier League - currently 20 teams (was 22 in its first few seasons). Scottish Premier League - 12 teams (was 10 teams for about 25 years).
20
Three.
Simply n x (n-1) where n= number of teams in the league. So = 380 for Premier League where there are 20 teams.
3