Introductory Combinatorics, 5th edition

This book does a good job covering a lot of material, with rigorous presentation and lots of examples.There tend to be typos though! Especially the section on mobius functions. Sloppy section, good material.

Very good book , easy to understand and written in a very simple language. I highly recommend it. Contains good number of exercises ( neither too less nor too more).I fully hope you would appreciate this book .

Among the many available books I consider it one the best to begin.It's simple and colloquial .It also has an affordable price

As the name suggests it is introductory in nature. But at the same time forces advanced high school students to think rigorously. No previous background is required but some ingenuity in mathematics is required. Needed some corrections. Though it shouldn't be a problem because errata is available on internet.

Content is great but packaging couldn't have been worse.

Easy to learn