Two Plus Two Older Archives - Absence of ACES before the FLOP

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- Probability (http://archives2.twoplustwo.com/forumdisplay.php?f=23)

- - Absence of ACES before the FLOP (http://archives2.twoplustwo.com/showthread.php?t=401268)

Re: Absence of ACES before the FLOP

C(N,R) = N!/[(N-R!) * R!]

! is the symbol for factorial. It's the multiplication of all the numbers between 1 and itself. So:

4! = 4 * 3 * 2 * 1
8! = 8 * 7 * 6 * 5 * 4 * 3 * 2 * 1

Re: Absence of ACES before the FLOP

Thank you - LetYouDown - you didn't! I now understand the formula. Next step is to memorize the table. Another challenge.

Re: Absence of ACES before the FLOP

[ QUOTE ]
I must be slow... I don't see the difference. The wording is as show in SS. "The probaility that no player has an Ace (including yourself) "If you have no Ace the probability that no one has an Ace"

Tell me again the difference.

[/ QUOTE ]

The first one is before you have looked at your cards. With all dealt cards face down, what is the probability that no one has an ace. Think about an observer watching the game who can't see any hole cards. I don't know why you would want to use this one.

The second one assumes you have checked your hole cards and you have two non-ace cards.