Interview question: baby boys and baby girls

Interview question: baby boys and baby girls

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Source:

http://www.businessinsider.com/15-google-interview-questions-that-will-make-you-feel-stupid-2009-11#in-a-country-in-which-people-only-want-boys-3

In a country in which people only want boys, every family continues to have children until they have a boy. If they have a girl, they have another child. If they have a boy, they stop. What is the proportion of boys to girls in the country?

Answer next week.

EDIT 4/26: Answer.

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  • This one is funny. I like it because you can answer it without any math whatsoever: the event is random, and you can't control random.

    It applies to _any_ way to try to skew the distribution.

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