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22-02-2024
Biology

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If sex is a 50/50 coin flip and parents have 4 children, What is the probability they will have all boys or all girls?
1) (1/2)⁴ = 1/16
2) (1/2)⁴ + (1/2)⁴ = 2/16 = 1/8
3) 1/4 x 4 = 1

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