I do not think that using math or other predictions you can win in gambling, and especially in roulette. There everything is designed for pleasure, not profit.
Precisely, for me I also don't think that math could help you to win in gambling maybe sometimes there is a chance but it is only a little. As far as I know in order to win in gambling you must have a high amount of luck and even though you have it you still lose. Besides, gambling is not worth to gain profit.
Calculation games are very less in gambling, and I don't think that calculations will work in gambling. By using our calculations, we will get fun so we will use but the real fact is we will win our games based on our luck not from our calculations.