Question

how do you delete your own question on openstudy?

Answer 1

You must have a reason to delete it, the green people will do the rest.

Answer 2

As you have noticed, you can edit but not delete your own questions. The reason you can't delete your own questions is because some people were deleting all their questions once they were answered instead of leaving them up for other people to see.

Arcticf0x is right: if you have a compelling reason to delete a question talk to one of the mods about it.