00:01
All right, so we assume that the probability of a birth of a child of a particular sex, 50%, which means 50 % of girls, 50 % of a boy.
00:10
So in a family with four children, what is the probability that all the children are boys? all right, so if all the children are boys, that means the first children is boy, which is really.
00:26
The second one is a boy, which is i won't have a probability, and the first one is one has probability.
00:31
So in total, the probability is going to be 1 over 16.
00:38
And b, all the children are the same sex, which means it's either all boys or either or girls.
00:46
So it's going to be 1 over 16 times 2 because this is a boy's case, right? and the girl's case is exactly the same...