SOLUTION: A couple has two children and at least one is a boy. What is the probability that they have two boys?

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Question 1144488: A couple has two children and at least one is a boy. What is the probability that they have two boys?
Answer by math_helper(2461) About Me  (Show Source):
You can put this solution on YOUR website!
For two children in a family, here are the possibilities:

B,B
B,G
G,B
G,G

Since we are told that at least one child is a boy, we can eliminate the fourth choice as a possibility for this family. Only 1 out of the 3 remaining choices has B,B so the probability for two boys, given that at least one is a boy, is +highlight+%281%2F3%29+