Funny you should mention that...http://robjlow.blogspot.com/2018/04/the-two-child-puzzle.html …
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1/3 and 1/2
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RIDDLE
If a family has 2 children, at least 1 of which is a daughter, what is the probability both are daughters?
If a family has 2 children, the elder of which is a daughter, what is the probability both are daughters?