Divisibility, the Euclidean Algorithm, and Greatest Common Divisors (GCD). Modular arithmetic and solving linear congruences. Introduction to groups, rings, and fields.
If you get stuck, uncover exactly one line of the solution. Try to figure out why the author took that step before reading further. 2000 Solved Problems In Discrete Mathematics Pdf -BEST
Which is giving you trouble (e.g., Mathematical Induction, Graph Theory)? the Euclidean Algorithm