A man and his wife have three children. The first two are both girls; one has blood group A and one has blood group O.
The children’s father has blood group B.
What is the probability that the third child is a boy with blood group B?
0.125
2 )
0.25
3 )
0.50
4 )
1.00
تحلیل ویدئویی تست
منتظریم اولین نفر تحلیلش کنه!