Good morning fellow gamblers......I play video poker and I get the whole full pay vs bad pay table games. I also know that job pays back 99.64 I guess with perfect play and dueces pay back 100.74 with expert play and so on. My question is how do people know that payback is so and so on this game or that game? I am not talking about figuring it out by looking at the pay table as in what full house and flushes pay. How do they know that a dueces wild game with a full pay table pays back exactly 100.74%.....do they get this from the game makers or did someone math it out.....