You're always allowed to answer your own question as long as the information is helpful or productive to the solution. Pretty sure there's no limit to the type of question, as long as it fits as an answer.
I can't remember where, but there's a post from a moderator that says it's even okay to ask a particularly helpful question if you have an answer available, since it can be helpful to other users. As long as you don't go crazy asking trivial things or something like "Where do you find Torkoal in Ruby" to intentionally get points, you're totally justified in answering your own question.
I couldn't find the post mentioned above, but I did find this older statement from Pokemaster.
A lot of people have this idea that it's only okay if your question goes weeks without being answered, but I'm pretty sure the only staff member to ever promote that mentality was Ninja, while most other mods are indifferent (although PM didn't refute what he said). I'm not saying to go around asking random, ridiculous things for points but if you have something important to add you should by all means ask it to get the answer out there. That question is totally fine to answer, since it's in the same realm as moveset questions.
Just don't ask any questions specifically to answer them for fun, and you're probably fine.
