So, I came across this image just a little while ago, which is like a Pokemon type horoscope thing.
Find your birth month for your primary type and the day for your secondary type! Which type or types are you? If your birth month type happens to be the same as the type on the day, then you're a single type, I'd assume.
Me? I'm Grass/Dragon! Which is actually pretty damn sweet! Those are my second favorite types after Fire these days. :D