1. The document contains examples of calculating combinations and permutations to determine the number of possible outcomes when selecting objects without and with regard to order.
2. It provides step-by-step workings to solve combinations and permutation problems involving people, songs, cards, and other scenarios.
3. The key concepts covered are distinguishing between combinations and permutations, using the fundamental counting principle, and applying formulas to calculate the number of possible outcomes in a variety of word problems.