To better explain how the casino edge works, let's take the example of flipping a coin. (We'll talk more about free odds in Strategies the Winners Use.) Free odds, which is an additional wager you place with your original line bet, pay true odds so the casino's edge is reduced. Now, true odds are not what the casino pays you unless you're also betting 'free odds' on top of your main bet. Knowing the odds in craps is good so you have a feel for the likelihood of one number being rolled before another one (e.g., is the 4 going to be rolled before the 7?). Odds for Each Numberīy looking at the possible combinations, the ' true odds' for each number can be established. This means you'll roll a 7 once out of every six rolls, a 6 or an 8 once out of every 7 to 8 rolls, and so on. From the chart, you can see that the most likely number you'll roll is a 7, followed by the 6 and the 8, then 5 and 9, then 4 and 10, then 3 and 11, and finally (and least likely) the 2 and the 12.