OBJECTIVE LIFE SCIENCE
GENETICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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What is the probability of a couple having four consecutive female children.
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1/6
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1/2
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1/4
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1/16
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Explanation:
Detailed explanation-1: -One in 16. The chances of having four girls in a row is the same as having any specified sequence such as boy-girl-boy girl.
Detailed explanation-2: -We can use the binomial probability formula to calculate this: P(1 girl and 4 boys) = (5 choose 1) * (1/2)^1 * (1/2)^4 = 5 * 1/2 * 1/16 = 5/32 Therefore, the probability of having 1 girl and 4 boys in a family of 5 is 5/32, or approximately 0.15625.
Detailed explanation-3: -Sample space is the complete enumeration of all outcomes of an event. On any particular order of childbirth, there are two possible outcomes, g(girl) or b(boy). Therefore, on four births, there would be 2 4 = 16 possible combinations.
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