Suppose two number cubes are rolled. What is the probability of rolling a sum greater than 8?

List out the sums greater than 8:

(4, 5)
(4, 6)
(5, 5)
(5, 6)
(6, 6)
(5, 4)
(6, 4)
(6, 5)

Since there are 6 * 6 = 36 total outcomes, we have the probability of the sum greater than 8 as:

8/36 = 2/9