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Practical Poker Math

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3. Odds in Texas Hold’em<br />

39 * 55 = 2,145<br />

We now have all the numbers needed to calculate the odds of<br />

flopping a Flush draw with 2 suited cards in the hole:<br />

Total Possibilities = 19,600<br />

– WILLs = 2,145<br />

WILLNOTs = 17,455<br />

Odds of Flopping Flush Draw with 2 Suited<br />

WILLNOTs : WILLs<br />

17,455 : 2,145<br />

Reduce<br />

17,455 / 2,145 : 2,145 / 2,145<br />

8.14 : 1<br />

2 Suited >>> Flush<br />

To calculate the odds against flopping a Flush with 2 suited<br />

cards in the hole, first find the number of possible 3-card<br />

Flops where all three cards match the suit of the hole cards<br />

— Comb(11, 3):<br />

(11 * 10 * 9) = 165<br />

(1 * 2 * 3)<br />

We now have all the numbers needed to calculate the odds of<br />

flopping a Flush with 2 suited cards in the hole:<br />

Total Possibilities = 19,600<br />

– WILLs = 165<br />

WILLNOTs = 19,435<br />

Odds of Flopping Flush with 2 Suited<br />

WILLNOTs : WILLs<br />

19,435 : 165<br />

80

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