You have a coin which is weighted, so it comes up heads 70% of the time and tail...

		impendia on Oct 19, 2011 \| parent \| context \| favorite \| on: How to turn a biased coin into a Fair Coin You have a coin which is weighted, so it comes up heads 70% of the time and tails only 30%. Or worse yet, perhaps you don't even know what frequency it comes up heads. Given such a coin, and nothing else, how can you simulate a fair single coin flip?