I was in my English class yesterday where I was learning direct/indirect questions, and I tried to come up with examples of them. I thought it was going to be easy, but I ended up being confused about these three varieties of a question I thought of.
- Which car is yours? / May I ask you which car yours is?
- Which one is your car? / May I ask you which one your car is?
- Which is your car? / May I ask you which your car is?
Are any of these grammatically wrong? Which one is the most natural?