Conditional Probability

Let S be the sample space
n(S) 36
Events
[sum greater than 3 but not exceeding 6]
= {(2, 2), (3, 1), (1, 3), (4, 1), (1, 4), (5, 1) (1, 5),
(3, 2), (2, 3), (4, 2), (2,4), (3, 3)}
n(E) 12
Required probability =