The number of baseballs used in a 9 inning game can differ from many foul balls and homeruns. So there is no exact number of baseballs used in a 9 inning game.
There are 3 outs in an inning.
3 outs end an inning
three outs per inning
3 outs per inning
In total there are 6 outs in an whole inning but each half inning only has 3 outs.
There are 6 outs per inning...3 outs for the Visitor in the top half of the inning, and 3 outs for the Home team in the bottom half of the inning.
There is 3 outs in the bottom of each inning and 3 outs in the top of each inning so there are 6 total outs in each inning.
In one inning there is six outs, but in one half inning there is three.
there are 6 outs per inning, 3 per team
There are 3 outs in each half inning, so there are 6 outs in one full inning