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Math: Is my answer correct?

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I am not sure how to do this, just guesssing.

A couple has a 2/3 probability of passing on brown eyes to their children. If they have four children,
what is the probability that none of the children will have brown eyes?

A) 8/27 B) 1/27 C) 1/81 D) 16/81

Would I multiply 2/3^4 thus my answer is D) 16/81

  • Math: Is my answer correct? -

    it is a

  • Math: Is my answer correct? -

    why do you only multiply to the third power?

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