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Old 12-16-2005, 12:04 PM
pete shaw pete shaw is offline
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Default A9- How often am I Behind?

If I was a math wizz I wouldnt be asking!

Holding any A9, how often am I behind? (opponent has AT or higher, or pair)

Assume 3 handed.

Then 2 handed.

Thanks

Rob
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  #2  
Old 12-16-2005, 12:18 PM
mostsmooth mostsmooth is offline
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Default Re: A9- How often am I Behind?

it depends
(btw, thanks for clearing up what hands are ahead of A9)
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  #3  
Old 12-16-2005, 12:24 PM
Tom1975 Tom1975 is offline
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Default Re: A9- How often am I Behind?

They can have 22-88,TT-KK 6 different ways apiece, for a total of 66 hands. They can have 99 or AA 3 different ways for a total of 6 hands. They can have AT-AK 3*16=48 different ways (3 Aces, 16 T,J,Q,K). So there are a grand total of 120 hands that beat you. There are 1326 total starting hands, so the odds of one oppenent beating you is
120/1326=9.6%

The odds of one of two opponents beating you is approximately 1-(1-.096)^2=17.2%. To get an extact answer you would have to use inclusing/exclusion which I don't feel like doing.
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  #4  
Old 12-16-2005, 12:31 PM
PseudoPserious PseudoPserious is offline
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Default Re: A9- How often am I Behind?

It's about 9.8% that one opponent will have a pair or AK-AT versus your A9.

It's about 18.7% that at least one of two opponents will have your A9 beat.

PP
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  #5  
Old 12-16-2005, 01:16 PM
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Default Re: A9- How often am I Behind?

I think this is a situation where reads are more important than straight odds. If it is folded around to you in LP it may be worth playing, but you would want to open raise with it and if you are called you get that sinking feeling if the callers are tight because A9 sin't that good against what good players will call a raise with. If it is re-raised you have to make a tough descision because it isn't that strong a hand.
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  #6  
Old 12-16-2005, 01:26 PM
PseudoPserious PseudoPserious is offline
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Default Re: A9- How often am I Behind?

That wasn't the OP's question though. Who knows what context he had in mind? Maybe he's trying to decide if he should hold onto A9 in a 3-handed 2-card Guts game.

PP
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  #7  
Old 12-16-2005, 04:56 PM
LetYouDown LetYouDown is offline
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Default Re: A9- How often am I Behind?

[ QUOTE ]
There are 1326 total starting hands (but you hold A-9, so it's 1225), so the odds of one oppenent being ahead of you preflop is 120/1225=9.8%

[/ QUOTE ]
FYP.
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  #8  
Old 12-16-2005, 05:42 PM
pete shaw pete shaw is offline
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Default Re: A9- How often am I Behind?

I was discussing this with my brother. He was heads up at the end of a bar tourney. both had about 13x BB.

I was applying it to a stt itm.

Rob
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  #9  
Old 12-17-2005, 01:09 AM
mostsmooth mostsmooth is offline
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Default Re: A9- How often am I Behind?

[ QUOTE ]
He was heads up at the end of a bar tourney. both had about 13x BB.

[/ QUOTE ]
ahh, so i was right. the correct answer is it depends.
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