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#### nondescript

##### Rising Star

- Joined
- Jun 3, 2016

- Total posts
- 7

It's my first post here! Hope to be a part of the community. My question concerns the rule of 4/2. I'd like to ask what the logical reason is behind the approximation. I figured out the reason for the rule of 2: the probability that you win in the river given that you are in the turn is = outs/44 = 2 outs / 88 which is approximately 2*outs / 100. You can use the same reasoning if you are in the flop and only want to see whether you'd win if the game stops in the turn because this time the probability of winning is = outs/45 = 2*outs/90 which is again approximately 2*outs / 100. Please correct me if my reasoning has flaws. But I don't understand how to derive the rule of 4.

Can anyone help with this? Thanks!