Casino Talks

Posted by: Heshkak at February 21, 2005, 6:33 am

Topic: Poker Math Forum: Card Chat

Ok. Here's how the math goes.

Assume after the flop you have an Open ended straight draw PLUS the flush draw.

Next card math
-----------------
number of outs (divided by) number of cards unseen
15 (number of outs) / 47
**note there are 8 outs for striaght and 9 for flush(total 17) but 2 cards that are for the straght will also give you the flush so you have to subtract those outs.

15/47 = 32%

Till River Math
------------------
This is a little more tricky because you can not just add 32%+32%=64%. THIS IS WRONG.

The EASIEST WAY to calculate this is to figure out your odds of NOT making the draw.

= chance of not making it on turn (multiplied by) chance of not making it on river
= 32/47 (multiplied by) 31/46
= .68 x .67
= .456
= 45.6%

Now you subtract 45.6% from 100% = 54.4%

So you have 54% chance of making your draw by the river.

Let me know if you want me to do any others.

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