Probability

http://www.youtube.com/watch?v=3ER8OkqBdpE 1
http://www.youtube.com/watch?v=6E_NVnboMB8&feature=fvwrel 2
http://www.youtube.com/watch?v=wBDOCvHYckE&feature=fvwrel 3
http://www.youtube.com/watch?v=W581OBM9rAY&feature=fvwrel 4
http://www.youtube.com/watch?v=2XToWi9j0Tk&feature=fvwrel 5
http://www.youtube.com/watch?v=xf3vfczoCho&feature=fvwrel 6
http://www.youtube.com/watch?v=BLcgeLALLnc&feature=fvwrel 7
http://www.youtube.com/watch?v=VVr8snbaxZg&feature=fvwrel 8