In humans, sex determination is controlled by the X and Y chromosomes. A man and a woman have three children, two boys and a girl.
What is the probability that their next child will be a girl?
1 )
25%
50%
3 )
75%
4 )
100%
تحلیل ویدئویی تست
تحلیل ویدئویی برای این تست ثبت نشده است!