Quote Originally Posted by bigspenda73
Quote Originally Posted by swiggidy
IT"S NOT 222, it's 221!!!
Are you sure? I mean we see this all the time but I'd really like someone to work the math out...
swiggidy already gave u the formula

Here's a more intuitive way to work it out:
Ways to get AA = 4 x 3
Ways to get any 2 = 52 x 51

(52x51)/(4x3) = 221

BTW swiggidy as my combinatorial statistics sux, what kind of distribution are you using for your n chart and what's the basis for using it?