It is very common in other languages to use the literal equivalents of "How-manyth". But some how English seems to not have that word?
How do I ask a kid?
How-manyth son are you?
(To know whether he is first or second born)
Maybe one more example,
Mr. XYZ is how-manyth president of this company?
(Is he Mr. XYZ 3rd or 5th or etc)
What is the solution? I want a single word for this!? I know the round abouts, why not English has created a word for this?