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 Originally Posted by sandstorm
Someone solve number 5 and explain plz
Is it the daughter he's talking to? How do we know that in that case?
I thought I did.
Originally Posted by trainer_jyms
5)Obvious that it's 50% that the other is a girl, BUT the probability is only 33% that she has 2 girls.
The probability is only 1 in 4 that she has two daughters. 2 boys, a boy and a girl or two girls. The odds of her other being a girl is 50% since we know that one is already a girl. Probability is the chance "before" any facts are known.
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