A man has 3 children Two Boys and a girl He wants 12 boys an

A man has 3 children, Two Boys and a girl. He wants 12 boys and he wants each boy to have a sister. How many girls would there be?

Solution

3 children - 2 boys and a girl. 12 boys are required at the end. For each boy to have a sister, there should be at least one girl child which is already true. So there would be 1 girl at the end.