Daily Puzzle — 2026-07-09
You have 5 outs on the turn (river only). What is the exact probability of hitting?
You have 5 outs on the turn (river only). What is the exact probability of hitting?
Answer & explanation
A. 10.87% — Rule of 2&4 approximates 10%; the exact hypergeometric value is 10.87% (error 0.87%, 46 unseen cards).
Source: poker-math.ts:ruleOf2And4