2009-03-12, 05:28 PM
God people look at the original problem.
One of the kids is a boy
so these are your only options:
B/B
B/G <-
G/B <-
The two with the arrows ARE separate since its only specified that one of them is a boy and you aren't told which.
So simple math, out of 3 distinct possibilities only 1 works... what are the odds then? cough1/3cough.
And to those of you who say that its 50%:
Its only 50% if you're told that the first kid is a boy or a girl. But since you dont know which of the kids is which, you have those three separate possibilities not just two possibilities.
One of the kids is a boy
so these are your only options:
B/B
B/G <-
G/B <-
The two with the arrows ARE separate since its only specified that one of them is a boy and you aren't told which.
So simple math, out of 3 distinct possibilities only 1 works... what are the odds then? cough1/3cough.
And to those of you who say that its 50%:
Its only 50% if you're told that the first kid is a boy or a girl. But since you dont know which of the kids is which, you have those three separate possibilities not just two possibilities.