omaha maths

[econ_tim 0]

Quick. What are the odds of flopping a set when you hold a pair before the flop in Omaha?And what are the odds of hitting a flush by the river when you have four to a flush (and no extra flush cards in you hand) on the flop?Answers below, but try to think of it yourself first.Flopping a set is 7.13 to 1 against.Flushing by the river is 1.75 to 1 against.Why are these odds different than Hold'em. Because your hand consists of four cards, so there are two fewer unknown cards in the deck, thus a higher chance you'll hit the card(s) you need.This might be obvious to some of you or very basic info to others, but I didn't realize this until I was reading an argument on a thread the other day. Don't use the Hold'em probabilties for draws or you'll be underestimating your equity.

[Chamonyx 0]

Flopping a set is 7.13 to 1 against.Flushing by the river is 1.75 to 1 against.

For the set, you might as well include quads, so the chance that you "hit" is actually 7.17:1 :-) Also note that if you kill 2 of the flush outs (with blockers or by holding a set for example) the odds on the flush making a winning hand drop to 2.45:1Something to think about next time you want to go to war on the flop.