See, if you are already at the stage where you are getting nervous of Something or some Subjects then MBA might not be a correct choice for you.

First of all cracking CAT requires a good level of logical thinking with maths being the X-factor.

Actually Specialisations like international management, human resources tend to have the least math but what after that.

You do MBA because you need to expand your limits, break out the jail, out of the box and here you are getting nervous with Maths.

Think about it and work for it.

All the best!!