I understand the chances never fluctuate, every item has equal chances of happening during a random roll. What I'm getting at is, in dice games (math is not something I'm passionate about nor find much real world use aside from drug calculations so these are basic examples) in dice, a 2 of a kind is easier to get than a four of a kind. Rolling a 6,5,4,3,2,1 in succession won't be seen 20% of the time even though each individual item has a 20% chance of dropping. Check out this website, these guys sound smarter than you and me. http://math.stackexchange.com/questions/893342/how-to-calculate-the-probability-of-rolling-6-at-least-5-times-in-a-row-out-of On a side note that last half of your paragraph was confusing as hell.