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Practical Poker Math

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

The total number of 4-card combinations possible from a<br />

52-card deck is 270,725.<br />

There are 6 2-card combinations that can contain a pair of<br />

Aces.<br />

To find the number of 4-card combinations that can contain<br />

AA2x, multiply the number of possible pairs of Aces (6) by<br />

the number of 2-card combinations that can contain at least<br />

one Deuce and no Aces (4 * 47 = 188). The number of 4card<br />

combinations that can contain one pair of Aces and one<br />

or more Deuces is:<br />

6 * 188 = 1,128<br />

The probability of AA2x in the hole expressed as a percentage<br />

is<br />

WILLs<br />

* 100 = Probability as %<br />

Total Possibilities<br />

1.128 * 100 = .42%<br />

270,725<br />

To find the odds of AA2x in the hole:<br />

Total Possibilities = 270,725<br />

– WILLs = 1,128<br />

WILLNOTs = 269,597<br />

WILLNOTs (269,597) : WILLs (1,128)<br />

269,597 : 1,128<br />

Reduce<br />

269,597 / 1,128 : 1,128/ 1,128<br />

239 : 1<br />

160

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