Every time teams play with each other (assuming there are no draws) half of them win and the others get eliminated so 64÷2=32 32 games played and 32 teams eliminated 32÷2=16 16 games played and 16 teams eliminated 16÷2=8 the same goes here 8÷2=4 and here 4÷2=2 . 2÷2=1 .