For each main the probability of winning can be calculated:
| Main | Probability of winning | Disadvantage to caster |
|---|---|---|
| 5 | 0.492 | 1.52% |
| 6 | 0.488 | 2.34% |
| 7 | 0.493 | 1.41% |
| 8 | 0.488 | 2.34% |
| 9 | 0.492 | 1.52% |
In some reports on the rules of the game, the main is determined randomly by tossing the dice until a valid main appears. In this case the overall player disadvantage is 1.84%. If the caster can choose a main, he should always choose 7. This may be how craps evolved, since if you always choose 7 the game is basically just craps.
Read more about this topic: Hazard (game)
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