CPM Homework Help : A2C Problem 13-114

If two dice are thrown and the numbers that come up are added to calculate a total number of points, what is the probability that each of the following events will occur?

Five points.
Answer (a):
$\frac{4}{36}=\frac{1}{9}$

Seven points.
Answer (b):
$\frac{6}{36}=\frac{1}{6}$

Five points before seven points.
Hint (c):
How many events are important?
More Help (c):
Of these, how many give the desired result?