A Pass bet is a "right" bet or one placed with the dice. It can only be made on a come out roll, that is before a new point is set. It wins if a 7 or 11 is rolled on the come out roll or if the point is made. It loses if a 2, 3, or 12 is rolled on the come out roll or a 7 is rolled before the point is made.

The Don't Pass is a "wrong" bet made on a come out roll. It wins if on the come out a 2 or 3 is rolled, loses if a 7 or 11 is rolled. It also wins if the point is not made and loses if it is made. Note that the Don't Pass is the exact opposite of the Pass bet with the exception that Don't Pass neither wins nor loses if a 12 is rolled on the come out.

The Pass/Don't Pass bets are even money bets, meaning you win a dollar for every dollar bet. The Don't Pass bet can be removed after the point is established (as long as there is no odds bet on it), but the Pass bet cannot be removed and remains until the point is won or lost.