Question: If the probability that a certain couple will have a blue-eyed child is 1/2, and they have 4 children, what is the probability that (a)

If the probability that a certain couple will have a blue-eyed child is 1/2, and they have 4 children, what is the probability that
(a) None of the children has blue eyes?
(b) At least 1 child has blue eyes?

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