2012-10-13, 11:51 PM
My probability is a bit rusty but if the chance of getting it is 1/64 and you use 64 coupons, the chance of not getting what you want would be (63/64)^64. That works out to around 36.5% which means you have a 63.5% chance of getting red skin and hair. If you're looking for 80% chance you're looking at 102 coupons, 90% would be 146, 99% would be 292. Good luck =)

