Tuesday, April 14, 2015

431: Mr Smith has Two Children.

Thank you for reminding me of this:

4 comments:

  1. 52% - but this isn't really a maths problem.

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  2. 0. The problem says "One of them"

    Seriously though, is it 1/3? Could be BB, BG, GG, GB. 3 of them have at least one boy. Given one of them is a boy, the only choice where the situation holds true is BB.

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  3. Yup. Counter-intuitive, like Monty Hall Problem.

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