Introduction D.C. Agarwal’s Discrete Structure is a widely used textbook aimed at undergraduate students in computer science, information technology, and related fields. It covers fundamental concepts in discrete mathematics—logic, set theory, relations, functions, combinatorics, graph theory, trees, and Boolean algebra—presented with an emphasis on clarity, worked examples, and problem sets for practice. This essay systematically examines the book’s scope, pedagogical approach, strengths, limitations, and its place in curricula and self-study.