Friday, October 3, 2008

Children

One of my co-interns gave me this riddle a few years back:

So there's a family with two kids.
One of the kids is a girl. What is the probability that the other kid is girl?
(It's not 1/2)

1 comment:

  1. one-third.

    possible combos of birthing two kids:
    BB,BG,GB,GG.

    omit BB since one kid has to be a girl.

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