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Practical Poker Math

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5. Odds in Omaha Hi-Lo<br />

A3XX >>> Nut Low<br />

Reduce<br />

14,096 / 3,200 : 3,200 / 3,200<br />

4.4 : 1<br />

To flop the Nut Low with this hand, the board must contain<br />

2 unpaired cards ranked 4 through 8 plus one Deuce.<br />

There are 20 cards that rank 4 through 8. The number of 2card<br />

combinations that contain 2 unpaired cards ranked 4<br />

through 8 is Comb(20, 2) minus the 30 pairs of these ranks:<br />

(20 * 19) = 190<br />

(1 * 2)<br />

190 – 30 = 160 is the number of 2-card combinations that<br />

will flop the Nut Low draw. The 160 is multiplied by 4 (the<br />

number of Deuces) to produce 640 3-card combinations<br />

that will flop the nut draw to this hand:<br />

Total Possibilities = 17,296<br />

– WILLs = 640<br />

WILLNOTs = 16,656<br />

Odds of Flopping Nut Low<br />

WILLNOTs : WILLs<br />

16,656 : 640<br />

Reduce<br />

16,656 / 640 : 640 / 640<br />

26 : 1<br />

190

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