Hello,

If you want to give the GRE general test which comprises the quantitative (math), verbal and Analytical writing sections, then you will have to give all three sections as they are all constituents of the GRE General test.

On the other hand, specialized GRE subject tests are also available. One of the subject tests is GRE Mathematics whic you can give regardless of whether you have given the GRE General test or not. 

But, generally, for admission to any postgraduate program, a candidate is required to submit GRE General test scores regardless of whether the candidate is submitting GRE subject test scores. 

For more information on the GRE and the GRE subject tests, visit: https://studyabroad.careers360.com/exams/gre 

Hello Rajanchanukyakumar

No, GRE is a standardized test which includes different topics in one exam only, it is not conducted subject wise.