Finished bachelor's and master's in mathematical finance. Applying for PhD in math, which may or may not be in a university that requires General GRE or Math GRE
Based on my other questions (like this) and what I read online, the General GRE and the Math GRE are taken only as required for application or taken with the intention of possibly applying somewhere where it is needed. Like a high grade helps little in admission but a low grade helps a lot in non-admission.
So showing a high grade in Math GRE to a school that doesn't require it in general would be all the more not very helpful in applications?
Let's say I apply to a set of universities in different countries where none of them require any GRE.
It seems to me that the only reason for someone to take for example the Math GRE other than being required is to strengthen your application based on your bachelor's or master's not being math.