I need to hang on to the exams themselves, but I would encourage people to look at their final exams in my office. Just because the course is over doesn't mean you have to stop learning about probability, and seeing where you made mistakes is a good way to do this. And, even though I checked them several times, there is always a chance you'll catch an addition error. The best thing to do is to drop by during my office hours (Monday and Friday, 2:30-3:30). Failing that, you can make an appointment by e-mail, or gamble on finding me in my office at some other time.
If, for some reason, you can't check your grade outside my office, send me an e-mail requesting it. I will reply in kind. Be sure to include your name (and, by way of identification) your complete student number.