A society has the rule that if a couple gives birth to a boy, they may not have any more children. If they have a girl they may continue having girls until a boy is born. The sex of the babies is purely random and overall the chances of having a boy or a girl are exactly equal. What is the percentage of girls in the population assuming both sexes live to the same age?(adsbygoogle = window.adsbygoogle || []).push({});

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# How Many Girls for Every Boy?

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