”你在家中排行第幾”既英文?

What is your birth order among your siblings?
你在家中排行第幾?

Birth order: 出生次序，亦作出生排序或出生排行，是指一個人在兄弟姊妹中的排行順序
Siblings: 兄弟姊妹，也作兄弟姐妹，指有相同父親或母親的人

Are you the eldest among your siblings?
你在你兄弟姊妹中排行最大嗎?

Are you the youngest among your siblings?
你在你兄弟姊妹中排行最小嗎?

你响家中排行第幾？

Ranking by age, what number are you in your family?
By age, what do you rank in your family?

答：
I am the fourth.
Counting my parents, I am number four.
Not counting my parents, I am number two.