Look at the dancers. If you can see two directions in a shorter time, it means that you are smarter and have a balance between your left and right brains. If you can only see one direction, it doesn't mean that you are stupid, but you are more likely to become an expert in the industry you are good at.

Most right-brain people can't learn math well because they think math is only with the left brain, thus losing confidence in learning math.

I think the right brain is more used in mathematics, which is of great help to mathematics.