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Old 08-16-2005, 11:10 AM
Felipe Felipe is offline
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Default 97o getting a staight

what are the odds of 97o, all in preflop, getting a straight coming in at the river? Or just getting a straight at all?


I went all in on a guy in a small dfriendly tourny, We were the last two players in. I had 99, he shows 97. He takes home the money with a straight.
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Old 08-16-2005, 11:56 AM
LetYouDown LetYouDown is offline
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Default Re: 97o getting a staight

You need to be more specific. Does the board coming A-K-Q-J-10 count? What about 3-4-5-6-X? Are you asking about using both cards?

Are you really just looking for the odds that you'll win this hand?
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Old 08-16-2005, 12:21 PM
Felipe Felipe is offline
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Default Re: 97o getting a staight

I should have been more specific. I meant making a staright with just the 7.

the chances of winning i think are 80+%. ya.cool.thanks.
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Old 08-16-2005, 12:50 PM
LetYouDown LetYouDown is offline
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Default Re: 97o getting a staight

Well, with just the 7 you're looking at a board of 3-4-5-6-X where X isn't an 8 or a 7.

=(4 * 4 * 4 * 4 * 39)/COMBIN(50,5) = 0.471219%

Note: This includes flushes/straight flushes.
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Old 08-16-2005, 08:53 PM
hukilai hukilai is offline
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Default Re: 97o getting a staight

LetYouDown,
Where did you get this 39 number?
If we assume that two nines are not taken out, then it has to be 52-4(sevens)-4(eights)-2(9,7) = 42 cards for X.
So, for no 99 case it will be: 4^4*42/C(50,5)= 0.507%.
With 99 exposed: 4^4*40/C(48,5)= 0.598%.

Am I right here?
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  #6  
Old 08-16-2005, 09:18 PM
KJL KJL is offline
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Default Re: 97o getting a staight

52-4(99 and 97)-4(3,4,5,6)-4(4 eights)-3(3 remaining sevens)=37 is what I get.
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  #7  
Old 08-16-2005, 10:53 PM
hukilai hukilai is offline
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Default Re: 97o getting a staight

KJL,

You are wrong here - we don't mind having more than one card from 3-6 rank range (they will not ruin the hand).
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  #8  
Old 08-16-2005, 11:00 PM
KJL KJL is offline
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Default Re: 97o getting a staight

Yes, but in order to make the staright we need to use one 3, one 4, one 5, and one 6 for a total of four cards.
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  #9  
Old 08-16-2005, 11:10 PM
hukilai hukilai is offline
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Default Re: 97o getting a staight

oops, a couple of corrections:
1. Three sevens left in the deck, not four (my fault)
2. We are actually not afraid of eights here
3. 4568x(no seven) is winning too, so it is getting a little more complicated.

Ok, let's try again:
52-4(99, 97)-3(777)-4(four cards already picked out)= 41

and the chances to win are: 4*4*4*8*41/C(48,2)= 1.22%
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  #10  
Old 08-16-2005, 11:20 PM
KJL KJL is offline
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Default Re: 97o getting a staight

[ QUOTE ]
I should have been more specific. I meant making a staright with just the 7.


[/ QUOTE ] .

So we can't have an 8. And with the number 45, you also have to include the 3,4,5,6. So again I think its 37.
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