Secretary of president noynoy Aquino

If this would be translated to English, the direct way of questioning would be:

What number president was Noynoy Aquino?

or

What number president is Noynoy Aquino?

You can ask your friends this way like in casual conversations. But if it's somebody that you don't think you can be casual with, try the alternatives below:

1. Where does Noynoy Aquino fall numerically in the list of presidents of the Philippines?

2. Numerically, where does Noynoy Aquino fall on the list of Philippine presidents?

3. Based on the number of Philippine presidents which position does Noynoy Aquino hold?