Help me out here--I'm looking for something I once saw online

[Bigwig]

It was a chart showing the probability of overcards coming on the flop based on the PP that you have. Can anyone link me?

Thanks.

[eastbay]

[ QUOTE ]
It was a chart showing the probability of overcards coming on the flop based on the PP that you have. Can anyone link me?

Thanks.

[/ QUOTE ]

If we assume that we have no clue about the opponents cards, then there are 50 unseen cards. Let n be the number of overcards. The probability of the flop containing no overcards is then:
C(50-n,3)/C(50,3)

For KK, n=4 => 77.45% => 0.29:1
QQ, n=8 => 58.57% => 0.71:1
JJ, n=12 => 43.04% => 1.32:1
TT, n=16 => 30.53% => 2.28:1
99, n=20 => 20.71% => 3.83:1

Cut/pasted from 2+2 poster Henke.

eastbay

[skirtus]

This might help

http://www.pokersavvy.com/img/oddscard-web-lrg.gif