grammar - A question to ask about birth rank or serial number

Are you the third of your parents' children? or the second issue?

Or, you are the third guy, eh?

What is the question for which "he came third in the race" is an answer?.

Instead of resorting to such a questioning is there a single word to interrogatively seek information of placement on a time marker line ?

All Indian languages have such a word, none in English afaik..