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Double-Nine Dominoes. A set of double-nine dominoes allows you to play some of the more complicated domino games. They can also be used to add variety to the simpler games, or to allow more people to play them. A double-nine set contains 55 dominoes, with the numbers on the tiles ranging from 0 (or blank) to 9. In a double-nine set, there are ten suits (blank, 1, 2, 3, 4, 5, 6, 7, 8, 9), each with ten members. A double-nine is the heaviest domino; a double-blank is the lightest domino value.
All the rolls are independent, so rolling double sixes twice in a row is the same as rolling a six (on one die) four times in a row. Since there are six choices, then each time there is a 1/6 chance of rolling a six.The fact they are entirely independent of each other means we simply multiply each roll's probability together: 1/6 Ã 1/6 Ã 1/6 Ã 1/6 = (1/6)4 = 1/1296 = 0.00077. Now let's say you had already rolled double sixes.ince there are six choices, then each time there is a 1/6 chance of rolling a six. The fact they are entirely independent of each other means we simply multiply each roll's probability together: 1/6 Ã 1/6 Ã 1/6 Ã 1/6 = (1/6)4 = 1/1296 = 0.00077.