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Which is better IT or computer science? Computer science focuses on the efficient development of applications. On the other hand, Information Technology is more devoted to figuring out how to use those applications for solving business problems. Does computer science require math? Typically, computer science degree programs offer abstract algebra, discrete mathematics, graph theory, and other math courses alongside its computer science courses. ... Discrete mathematics, linear algebra, number theory, and graph theory are the math courses most relevant to the computer science profession. Computer science is the study of algorithmic processes, computational machines and computation itself. As a discipline, computer science spans a range of topics from theoretical studies of algorithms, computation and information to the practical issues of implementing computational systems in hardware and software.