How to get a fair coin flip with an unfair coin

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So I tried your trick with my P(heads)=1 coin and now I'm stuck flipping this coin forever :(

MathManMcGreal

Warning: if you get a null result (double head or double tails), you have to flip the coins twice again. If you simply take whichever pattern comes first, your results will be biased.

benkester

This particularly useful when flipping an object with unknown probabilities for the two opposite events.

codedragon

would you please unlock making subtitles? I woul dlike to make Slovak subtitles

niabride