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A family has two children. What is the probability that both the children are boys given that at least one of them is a boy?

User RyanLiu
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Answer:

the probability is 1/2

Explanation:

the probability of a child being a boy is 1/2, if at least one of them is already a boy, then the probability of both being boys, which amounts to saying that the other is also a boy, is 1/2

User Clucking Turtle
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