12. Determining Probability
http://goo.gl/cw6dDk You will read this one, it is not a video.

13. Probability in the Union of Two Events 6:10
http://tinyurl.com/mat-13-134

14. Counting Principle 6:32
http://tinyurl.com/mat-14-134

15. Permutations  10:53
https://vimeo.com/151156527

16. Combinations 8:47
https://vimeo.com/151156082

17. Geometric Probability Video (The 1st one is better, but the 2nd you can view on Chromebook)
http://goo.gl/8inJva
https://vimeo.com/151175779

18. Geometric Probability - Read
http://goo.gl/ZMK6B