Practical Poker Math

2. The Basic Calculations
After the Turn card has hit the board, there are 2 cards in
your pocket, 4 on the board and 46 unseen cards.
Total Possibilities = 46
Total Possibilities – WILLs (Outs) = WILLNOTs
Odds = WILLNOTs : WILLs (Outs)
There are 8 cards (4 on each end) that will make the Straight:
Total Possibilities = 46
– WILLs = 8
WILLNOTs = 38
Odds of a Straight with an Open Ended Draw
WILLNOTs : WILLs
38 : 8
Reduce
38 / 8 : 8 / 8
4.75 : 1
The odds of making the Straight on the River are slightly
better than the odds of making the same Straight on the
Turn, because there is one less card that WILLNOT make the
Straight among the unseen cards.
Odds in Omaha Hi-Lo
A major difference between calculating the odds in Texas
Hold’em and the odds in Omaha Hi-Lo is that many Hi-Lo
hands have opportunities to win in two ways.
Another difference is with starting hands. A player is more
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