Overview
When selecting objects, we can use the given table to hint at what counting strategy we should use:
| Order | Repeats | Answer Shape | Reference |
|---|---|---|---|
| Yes | Yes | - | |
| Yes | No | [[permutations#falling-factorials | |
| No | Yes | [[combinations#stars-and-bars | |
| No | No | combinations |
Bibliography
- Oscar Levin, Discrete Mathematics: An Open Introduction, 3rd ed., n.d., https://discrete.openmathbooks.org/pdfs/dmoi3-tablet.pdf.