Re: Omaha Preflop Probabilities (Can someone check my math please)
On your first one...the probability of having A-2-X-Y where X and Y aren't A or 2. You have 50-8 but you need 52-8 or 50-6 instead. This brings the probability slightly higher and looks right.
I haven't looked hard at the other numbers, but my guess is that they're at least slightly off. I believe you overlooked the Inclusion/Exclusion principle (sticky, for the love of GOD, lol). So you're double/triple counting times when more than one person has the hand in question.
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