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This is a discussion of the puzzle Mom’s Talk, posted in the Brain Teasers section of the website.
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Two moms, Sarah and Courtney, are talking to each other.
Sarah: I have two children.
What is the probability that both of Sarah’s children are boys?Courtney: Me too! Do you have any boys?
What is the probability that both of Courtney’s children are boys?Sarah: Yes, I do! What is your younger child?
What is the probability that both of Sarah’s children are boys?Courtney: It is a boy. He is so mischievous!
What is the probability that both of Courtney’s children are boys?Sarah: Is he Sagittarius? Sagittarius boys are known to drive their mothers crazy. I can also testify from personal experience.
What is the probability that both of Sarah’s children are boys?Courtney: No, but actually I have the opposite personal experience to yours.
What is the probability that both of Courtney’s children are boys?Sarah: Well, I guess astrology does not always get it right.
Courtney: Well, I guess it does about half of the time.
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