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anonymous

  • 5 years ago

A family has three children. Assuming the chance of either a boy or a girl is equal (50% each), what is the chance that the family has three girls given that the first child is a girl.

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  1. anonymous
    • 5 years ago
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    \[\frac{1}{4}\]

  2. anonymous
    • 5 years ago
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    you know that the first child is already a girl so the question really is 'what it the probability they have two more girls?' assuming independence you just multiply the probabilities together \[\frac{1}{2} \times \frac{1}{2}\]

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