A resource of exercises about induction and combinatorics

Question

I'm looking for a book, webpage or similar resource with a lot of exercises about induction and combinatorics at basic level.

Answer 1

A path to combinatorics for undergraduates, by Titu Andreescu and Zuming Feng.

Answer 2

Dr. Trotter is kind enough to provide freely his textbook at his website. It is focused towards early combinatorics and the third chapter is devoted towards induction. I think it's a great read.

Answer 3

You can have a look at the counting problems in alcumus:

http://www.artofproblemsolving.com/Alcumus/Introduction.php

Answer 4

There are the assignments of the Art of Counting course in MIT: http://ocw.mit.edu/courses/mathematics/18-s66-the-art-of-counting-spring-2003/assignments/ They are pretty good