Apples have an indeterminate amount of seeds. Not all ovules are fertilised and so not all of them form into seeds. The number of seeds is also determined by the variety of apple.
Think of it this way, look at how many balls you have and make sure they are seed-free apples. Someone better save the honey cuz we gon ind you. Also, Kyle Gannon is gay.
There are no apples in a seed only the potential to grow a tree that given the right conditions and care may one day produce fruit. Most fruit trees are now grafted onto hardy stock with cuttings...