There are 4 children in the family, the fourth boy, so how old is he?

The boy is the fourth in the family ranking, even if he is the elder sister in front of him, he is also the fourth. From a boy's point of view, he was the eldest son. But not the first child of the parents.

Since you said that he is the fourth, why do you still ask about the ranking? The ranking is the fourth. Since the first 3 are all sisters, he is also the eldest son. The two do not conflict.

It depends on how you line up, if you only line up for men and not women, then it's the boss. If the co-ed volleyball is mixed, it will be the fourth. It's up to you how you get it, but it's all the same now, and you shouldn't be patriarchal.

There are 4 children in the family, and the fourth boy is the fourth in line, but he can be said to be the eldest son, because the first 3 are all older sisters.

Now the children in the family are sorted to include girls, so the above three sisters, this child is also counted as the fourth, if in ancient times, this situation was separated by men and women, and boys were counted as the eldest son.

There are four children, and the boy is the fourth, and that is the youngest child, that is, the third.

Isn't there a total of four children in the family, and there are only four children in the family? He's a boy, a teacher, so he's in the ranking family, it's the teacher, the fourth, then he may be himself, he may be these words, his nickname, it's called the fourth, and the ranking at home is the teacher.

I think in order of his age, he should be the fourth and the youngest child in the family, but if you talk about the eldest son, it should be the fourth.

There are four children in the family, the fourth boy, so he will be the fourth, because the first three are sisters.

There are four children in the family, the fourth boy, then he should be the youngest, the fourth.

There are four children in the family, and the boy is always there, so he is the oldest The first three are all sisters, so he should be the eldest, and the sister doesn't count.

Usually the last one will say the old one.

There are 4 children in the family, and the boy is the fourth, so of course he is the fourth.

He is all sisters in front of him, so he is the eldest son in the family and the fourth.

In order of the children's date of birth, since the boy is the fourth child, he should be the fourth in the family.

Four children, of course, the fourth is right.

All the children are the fourth, the youngest.

There are four children in total, and the three sisters in front of him, so this boy must be the fourth.

Hello! The question you asked was vague, "How old is he?"

I can only tell you: he may be the eldest and the oldest.

Second, the third.

Didn't you say that? Fourth!

Possible scenarios are: 4 males; 1 male and 3 female; Qin Ming 2 males and 2 females; 3 males and 1 female; 4 females, a total of five situations, each of which has the same chance of occurring then: p (all boys) = 1 5 , the first is correct; p (at least one girl) = 4 5, correct; p (2 males and 2 females) = 1 5, correct; p (at least 2 girls) = 3 5, correct; p (3 males and 1 female) = 1 5, wrong There are 4 macropei correct, so choose c