Daily Puzzle — 2026-08-22
You have 9 outs on the turn (river only). What is the exact probability of hitting?
You have 9 outs on the turn (river only). What is the exact probability of hitting?
Answer & explanation
A. 19.57% — Rule of 2&4 approximates 18%; the exact hypergeometric value is 19.57% (error 1.57%, 46 unseen cards).
Source: poker-math.ts:ruleOf2And4