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What is the probability of the second child is a boy a girl?
1/2 chance
The only two options are the second child is a boy or a girl. It’s 50-50 or a 1/2 chance the second child is a girl. For the Joneses, however, you only know that one of the children is a girl, but not the order….The Two-Child Paradox.
| Older Child | Younger Child |
|---|---|
| Boy | Boy |
| Boy | Girl |
| Girl | Boy |
| Girl | Girl |
Has 2 kids and one of them is a boy what is the probability that the other child is also a boy you can assume that there are an equal number of boys and girls in the world?
All with equal probability, so the answer is 2/3. Another way to win the answer would be asking the man: ‘Tell me how many children you have and tell me the gender of one of your children’ Then the man could say: ‘I have two children and one of them is a boy’.
What are the chances of having one boy and one girl?
The odds of having a girl or a boy are the same with a one in two chance of it being one or the other. 50/50 if you like.
What is the probability of having two children?
If someone had two kids, there are four equally probably scenarios: boy-boy, boy-girl If you know that exactly one is a boy, then the probability is 1. If you know that at least one is a boy, then the probability is 2/3. But if you know which one is a boy, then the probability is 1/2.
What is the probability of having a boy with 1/4?
Or, if you know your benchmark percents and fractions, you would know that 1/4 is equal to 25\%. Therefore there is a 25\% chance that out of 4 children, at least one will be a boy. When coming across a problem such as this one, it is easiest to put the 2 numbers into a ratio, 1:4.
What are the odds of having a 6/11 family?
Those numbers add up to one, as they should. 11/16 of the families have at least two boys. If you pick one of them at random, there is 6/11 chance it will have two boys and two girls, 4/11 that it has three boys and one girl and 1/11 chance that it has four boys. That’s where the 6/11 comes from.
What if only one of your kids is a boy?
If you know that one and only one child is a boy, then by definition the other is a girl. If you know that at least one child is a boy, it becomes more complicated. If someone had two kids, there are four equally probably scenarios: boy-boy, boy-girl, girl-boy, or girl-girl.