Gambling/Betting strategy question.?

I was wondering if it was possible to modify the betting strategy to make a profit with this data. Lets say you're playing a game.. It can be anything.. Blackjacks, poker, any type of gambling game.. There are 30 games/draws and you know for a fact 100% you can bet your life on it that you will hit 3-5 times within those 30 games/draws. Each game cost 2 dollars but the win is 5 dollars.. So thats 3 dollars profit. If you know 100% fact that you will win 3-5 times between every 30 draw but the problem is you dont know when.. is it possible to modify some sort of betting strategy to make crazy profit from it using big money? thanks