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I have a cummulative 3.5 GPA from a top 20 school but a 3.1 GPA in my math classes. In particular I got a BC in linear algebra and a C in abstract algebra. My goal was always to go to graduate school but I fear these two classes are going to crush that. Also my school doesn't allow for retaking of classes (BOO!). Any advice besides the obvious of trying to raise the GPA, ace the GRE, get great letters of recommendation or do research? Or will this be too much to overcome?