As already mentioned, determining one's intelligence isn't straight-forward. The terms of "smart", "brilliant" and "genius" are completely subjective, so even if I were to classify myself, I don't know the differences between each of them. I can say with confidence though that there are some areas I'm very proficient in, whereas others I'm average in and others I'm downright horrible in. As a result, after I find out what the subjective meanings and differences are between the different categories, I wouldn't know how to assign myself into 1 distinct category, it would be easier to assign each subject area into its own category.