Wow, thanks for the brilliant answer!!!
So, If I have for example A
K
The chance for Flush is
1,85%.
Calculation:
50 Unknown Cards / 39 Non Outs / 12 Outs = Preflop
2.118.760 different boards (50 choose 5)
50*49*48*47*46/(5*4*3*2*1) = 2.118.760
All boards with a heart:
5 heart boards
12 Outs → 12 choose 5
12*11*10*9*8/(5*4*3*2*1)
=>
792 combinations
4 heart boards
12 Outs → 12 choose 4
12*11*10*9 / (4*3*2*1)
=> 495 combinations
38 Non – Outs → 38 choose 1
38/1
=> 38 combinations
495*38
=>
18.810 combinations
heart boards total:
792+18.810
=>
19.602 combinations
heart and spade boards:
19.602 * 2
=>
39.204 combinations
RESULT:
39.204/2.118.760
==> 1,85%
Is that right???
With the two pair calculation, I still have some problems