Does it matter where you place ud. & uds.?

Question

like : ud. tiene un lapiz? or can you do it like this: tiene ud. un lapiz?

Answer 1

Both ways are correct.  

Answer 2

It doesn't matter, although the first is less formal than the second

Answer 3

Just don't place Ud. Sounds much better without. Tiene un lapiz?

Answer 4

The second one is a bit more formal but when using ud. its going to be formal anyways so I guess it doesn't matter too much. That's basically just 2 different ways of forming a question.

You can also say "tiene un lapiz" since by the way the verb "tener" is conjugated you can tell that it is being said in a formal manner.