Discrete Mathematics: An Open Introduction, Fourth Edition aims to provide an introduction to select topics in discrete mathematics at a level appropriate for first or second year undergraduate math and computer science majors, especially those who intend to teach middle and high school mathematics.The book began as a set of notes for the Discrete Mathematics course at the University of Northern Colorado.This course serves both as a survey of the topics in discrete math and as the “bridge” course for math majors. FeaturesUses problem-oriented and inquiry-based methods to teach the concepts. Suitable for undergraduates in mathematics and computer science. New to the 4th edition Large scale restructuring. Contains more than 750 exercises and examples. New sections on probability, relations, and discrete structures and their proofs.