In problem 9, the bits are counted starting from zero. So we have the 0th bit, 1st bit, 2nd bit, 3rd bit, 4th bit, and so on. The problem is asking for the 4th bit.

The final was specifically designed so that you do not need CCS/Launchpad. All the answers can be found in  the lessons and screencasts. You can use CCS/Launchpad if you like, but it will not give you much information (except for Prob. 8, which is very simple)