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प्रश्न
Suppose that each child born is equally likely to be a boy or a girl. Consider a family with exactly three children.
Write the following events as a set and find its probability:
The event that at least two children are girls
उत्तर
Let B denote the event that at least two children are girls.
B = {GGB, GBG, BGG, GGG}
P(B) = `4/8`.
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