Two dice produce exactly 36 equally likely combinations, and every probability, house-edge, and payout figure on this site is worked out directly from that set rather than copied from somewhere else and taken on faith. If a page states that a bet on the number 6 wins on five combinations out of 36, or that a hardway pays a specific ratio because of how few combinations make it, that's a count anyone can verify by listing the rolls themselves. The Odds & Math page walks through that method in more detail.
Once a figure is calculated, it gets cross-checked against Wizard of Odds, a widely used independent reference for gambling math. Combinatorics don't change and shouldn't disagree between sources; when a number here doesn't match, that's treated as a bug to find and fix, not a difference of opinion.
Rule variations are a separate matter from the math, since they differ by casino rather than by the game itself. Figures that depend on house rules — odds multiples, vig or commission conventions on buy and lay bets, field bet payouts on 2 and 12, and similar variations — are sourced from publicly posted table rules and rack cards, not assumptions about what's typical. Where a rule varies significantly by property, the relevant page notes that instead of stating one number as universal.
If you ever spot a figure that looks off, the corrections policy explains how to report it.