Getting a fair result with an unfair coin

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• Author: luismartingil
• Website: www.luismartingil.com
• Year: 2013

• Demonstrates de puzzle solution using matplotlib to generate the graphics and back my interpretation/solution.

Problem

How can you get a fair coin toss if someone hands you a coin that is weighted to come up heads more often than tails?

Solution

Game with a fair / unfair coin.

50% - 50%.

60% - 40%

80% - 20%

Fairness study. Is this method fair?

Max fairness: 1.0

Min fairness: 0.0