If a man has two children, and we know one is a girl, what is the probability that both are girls

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If a man has two children, and we know one is a girl, what is the probability that both are girls

[From: ] [author: ] [Date: 12-04-30] [Hit: ]

The odds therefore that there are two girls in the mans family is 1/3.-49%. A lot of people will say 50% but it is not, it is more likely that you will have a boy because a sperm that carries the boy gene is slightly stronger and fitter than the sperm that carries a girl gene.33%-50 percent.-50/50.......

There are four possibilities:

Boy Boy
Boy Girl
Girl Boy
Girl Girl

Normally the chances that there are two girls would be 25%, but because the Boy Boy possibility has been eliminated with the information provided, that means there are only three remaining possibilities.

The odds therefore that there are two girls in the man's family is 1/3.

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49%. A lot of people will say 50% but it is not, it is more likely that you will have a boy because a sperm that carries the boy gene is slightly stronger and fitter than the sperm that carries a girl gene.

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Three possibilities of having "one" as a girl

This one is a Boy - This one is a Girl
This one is a Girl - This one is a Boy
This one is a Girl - This one is a Girl

33%

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50 percent.

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50/50.

1

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