Thank you so much ameyp12. Unfortunately i can't download the zip file because i'm new to the forum
I'm gonna look over perm and comb stuff in the books that i have.
I'm a little peeved because i actually took a class-room based princeton course and there my instructor basically told us to skim through probability and perm-comb stuff because there might only be 1 question on the test. Now i'm getting anxious because if that 1 or even 2 questions come towards the begining of my test, i'm pretty screwed.
Thanks for your help though.