
Tim T. answered 03/27/19
Math: K-12th grade to Advanced Calc, Ring Theory, Cryptography
Greetings! Yes, the GRE Mathematics Subject Area covers,
50% Calculus: Calculus 1, 2, and 3 (maybe some Advanced Calculus)
25% Algebra: Linear & Abstract Algebra (maybe Graph Theory)
25% Additional Topics: Real analysis, Complex Analysis
Discrete and Combinatorics will not be on the GRE Mathematics Subject Test. The courses you have taken will suffice for the GRE.
Hope this helps!