Two. One from the Eastern Conference and one from the Western Conference.
Only two NBA teams play in one year's championship game.
24
10 teams.
There really are none. The conferences that hold championship games are those that have so many teams that they are broken into two divisions. The winner of each division will play in the championship game to crown a conference champion. Conferences that are not broken into two divisions do not have a championship game.
10
23
45 had won the most championship football games
Many too many to count.
16
198
24
120