But they aren’t innumerable! In fact, you can count them all easily. Mine will be 3273, magic yeah?
Also, don’t worry about it. If you’re good at math and like puzzles then this should come easily to you. Personally I’m pretty bad at all of this and would rather stick to my non-graphics related programming. Just keep studying and working at it and someday you’ll look back and realize how far you’ve come!