[kiddj]

[ QUOTE ]
You have suited cards.

Number of ways to make a four flush on the flop:
C(11,2) * C(39,1) = 2145

Number of way to flop a flush:
C(11,3) = 165

Since there are C(50,3) = 19,600 possible flops here are your aswers:

Four flush: 2145/19600 = 10.9% or 8.1:1 against.
Flush: 165/19600 = 0.84% or 117.8:1 against:
Four flush or flush: 2310/19600 = 11.8% or 7.5:1 against.

[/ QUOTE ]

My bad. I worked the four-flush slightly wrong. I do these in a strange long-hand way, so it's easy to mess up a calc. My corrected calc for the 4 flush only is: ((11/50)*(10/49)*(39/48))*3 = 10.9%