2: Enumeration
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2: Basic Counting Techniques
3: Permutations, Combinations, and the Binomial Theorem
4: Bijections and Combinatorial Proofs
5: Counting with Repetitions
6: Induction and Recursion
7: Generating Functions
8: Generating Functions and Recursion
9: Some Important Recursively-Defined Sequences
10: Other Basic Counting Techniques