Hello, I am m.s of systems engineering and b.s of industrial engineering and I have passed in some entrance exams and solved sample GMAT tests as well. I think this is a time consuming project but I am sure there are some resources that I can find many questions from them, I get 0.5$ in the average for each question that I think it is a law price.
many related courses such as mathematics, differential equations, probability, statistics, linear algebra, linear programming, numerical methods, and I have good command of English and with a lot of experiences in writing.