Thanks for your support. I encourage everyone to click through the banners to help support the site. To answer your question, no, it is not possible to get the same card back. The machine represents a fair deal from a single deck. Once you discard a card you can’t get it back. To the answer the second question, no, the casino can not change the probability of each hand. The video poker machines deal a fair game. How often you get each hand depends on the random draw of the cards and your skill in playing them.