How do I approach a stranger without it being awkward and get her number and ask her out
When approaching a stranger the best thing to do is to approach with an angle. For example if you walk up to her and say hey I saw you walking and I just wanted to say I think you're really cute, I have to run in a few minutes but I just wanted to see if you can talk for a little bit. My name is XYZ. now that you set a time constraint she won't feel like you're going to stick around forever, and if things start getting awkward you can only say well I got to get moving but it was really nice talking to you.