When two dice are rolled, what is the probability that the sum of the numbers appeared on them is 11?

Question: When two dice are rolled, what is the probability that the sum of the numbers appeared on them is 11?

Solution:
n(S) = 6²
= 36
n(E) = {(5, 6), (6, 5)} = 2

∴ p(E) = n(E)/n(S)
= 2/36
= 1/18