Combinatorics & Discrete Mathematics (Levin)
( \newcommand{\kernel}{\mathrm{null}\,}\)
This text aims to give an introduction to select topics in discrete mathematics at a level appropriate for first or second year undergraduate math majors, especially those who intend to teach middle and high school mathematics. A difference between this text and most other discrete math books is that this book is intended to be used in a class taught using problem oriented or inquiry based methods.
Thumbnail: A Venn diagram illustrating the intersection of two sets. (Public Domain; Cepheus via Wikipedia).