= Boy or Girl paradox
{wiki=Boy_or_Girl_paradox}
The Boy or Girl paradox is a thought experiment in probability that involves a seemingly counterintuitive scenario regarding gender. The classic version goes like this: A family has two children. We know that at least one of the children is a boy. What is the probability that both children are boys? Intuitively, many people might think the probability is 1/2, as there are two equally possible scenarios: either the children are (boy, boy) or (boy, girl).
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