"Although all slot machines look alike, no two models of machine are the same. Some are far better than others, and you should learn how to evaluate each machine to see if its worth playing."

"If you turn over a playing card, the chance it will be red is 0.5, or 50%. If the casino was fair, it would pay you $1 for a $1 bet. But if a casino pays you $0.90 instead, it has a 5% edge."

"The most common casino bet is an even money bet where you get one chip for every chip you bet. So if you bet one chip, you get your original chip back, plus an additional chip."

"Usually, a roulette table will have two different balls of slightly different sizes. Dealers can choose which to use based on which is more comfortable. The size of the ball does not affect the outcome."

"Nowadays, most slot machines have multiple pay lines. You choose how many lines to play and how much to bet on each, but you must bet at least one coin on each line to activate it or winning that line won't count."