Is my question correct? There are two questions in one sentence, is this correct?
你在哪个楼的几层学习？

Question

Answer

Perfect wording.
Here is a more common example when u ask two things in one sentence: 你准备几月几号来中国？

Answer

It is correct.You want to know the actual location so you asked two questions.

By the way my wechat is alpha _sir ,you can add me and we can communicate directly.

Answer

It is correct.You want to know the actual location so you asked two questions.