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Practical Poker Math

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3. Odds in Texas Hold’em<br />

Open Straight Draw & 4 Flush >>> Straight or<br />

Flush with 2 Cards to Come<br />

Of 47 cards, 8 will make the Straight and 9 will make the<br />

Flush. Of these 17 cards, 2 will make both the Straight and<br />

the Flush leaving 15 outs to either a Straight or a Flush. Any<br />

one of 15 cards will make either a Straight or a Flush and 32<br />

will not:<br />

15 * 32 = 480<br />

480 2-card combinations will contain 1 and only 1 Straight<br />

card.<br />

(15 * 14) = 105<br />

(1 * 2)<br />

105 2-card combinations will contain 2 Straight or Flush<br />

cards.<br />

480 + 105 = 585 possible 2-card combinations that WILL<br />

make either or both the Straight and Flush:<br />

Total Possibilities = 1,081<br />

– WILLs = 585<br />

WILLNOTs = 496<br />

Odds of a Straight or Flush with 2 Cards to Come<br />

WILLNOTs : WILLs<br />

496 : 585<br />

Reduce<br />

496 / 585 : 585 / 585<br />

.85 : 1<br />

With an open-ended Straight draw and a Flush draw,<br />

most of the time the player will complete either/both the<br />

Straight or Flush draw.<br />

108

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