An ordinary (fair) die is a cube with the numbers
1

through
6

on the sides (represented by painted spots). Imagine that such a die is rolled twice in succession and that the face values of the two rolls are added together. This sum is recorded as the outcome of a single trial of a random experiment.

Compute the probability of each of the following events.
Event
A

: The sum is greater than
9

.
Event
B

: The sum is an even number.