alot easier. Ok, so there are 4 separate basketball games being played. 2 teams to each game. If I was to pick one team for each game to win, what are the chances that I picked all 4 of the teams that won to win? (all games are even considering I am using the spreads).

Another way to explain. Team A plays team B 4 times. What are the chances that team A wins every single game when both teams are evenly matched?

My teacher said that each game is 50%. so that 2 games would be 25%, then 3 12.5% and finally 4 would be 6.25% but I don't believe that's true. Please help, thanks.