Math is everywhere. Most of the games are based on math, you need to have a little basic understanding otherwise you may lose big. But luck would be the most important factor in gambling.
But in gambling luck is very important than math because you can't be over smart than the gambling system they implemented. Whatever calculation you do in any kind of gambling games you can't say 100% your calculation is correct and you will win before the result comes out means something is missing that is called luck.