Chapters 7 and 8 and Permutational Math

I want to give a special thank you to Jason Boche for getting me all wrapped up in permutation calculations around the number of possible bit.ly permutations before they will need to add a 6th character to their strings (776,520,240 for those interested).  He through out a tweet mentioning my math skills and to check out my free chapters.  At that point I quickly got that sinking feeling in my stomach which quickly reminded me “Holy crap I’m behind”.  Without further ado, I give you a two-for and introduce Chapters 7 and 8 from books 1 and 2.

URL: http://www.vmguru.com/index.php/articles-mainmenu-62/general-mainmenu-63/100-chapters-7-and-8-and-permutational-math