Math Gone Bad?

Since I was doing so well in my Discrete Mathematics class, I decided to take the final with little to no studying. All the tests through the DeVry online are open book so and I tend to do well this way.

However in this case, with 3 hours and 3 minutes and 15 problems, it didn't go very well. I started on what I thought would be an easy problem, 25 minutes later I was half done and starting to stress. I finished every problem and used every minute I had. Now I have to wait until the 30th to find out how I did.