Rolling two six-sided dice: Each die has 6 equally likely outcomes, so the sample space is 6*6 or 36 equally likely outcomes.
Let (a,b) denote a possible outcome of rolling the two die, with a the number on the top of the first die and b the number on the top of the second die. Note that each of a and b can be any of the integers from 1 through 6.
So, the list of the sample space is given by:
(1,1) | (1,2) | (1,3) | (1,4) | (1,5) | (1,6) |
(2,1) | (2,2) | (2,3) | (2,4) | (2,5) | (2,6) |
(3,1) | (3,2) | (3,3) | (3,4) | (3,5) | (3,6) |
(4,1) | (4,2) | (4,3) | (4,4) | (4,5) | (4,6) |
(5,1) | (5,2) | (5,3) | (5,4) | (5,5) | (5,6) |
(6,1) | (6,2) | (6,3) | (6,4) | (6,5) | (6,6) |
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