Question 378956
three babies are born in a family.find the probability
1...a family has 3 male babies given that all the 3 babies have same gender
Ans: 1/2
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2....a family has 2 male babies when it is known that first baby is male
Ans: P(one male in 2 births) = 2C1(1/2)^1*(1/2)^1 = 2*1/4 = 1/2
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Cheers,
Stan H.