Combination Calculator vs Permutation Calculator
Two calculators for the same neighbourhood of questions. Here is what each measures, what you feed in, and where you'd reach for one over the other.
Combination Calculator
Calculate the number of unordered selections of r items from n distinct items, where the order does not matter. Ideal for lottery draws, committees, and poker hands.
- Answers
- C(n,r)
- Inputs
- Total items (n), Items chosen (r)
Permutation Calculator
Calculate the number of ordered arrangements of r items chosen from n distinct items, where the order of selection matters. Ideal for rankings, sequences, and any selection where position counts.
- Answers
- P(n,r)
- Inputs
- Total items (n), Items chosen (r)
At a glance
| Combination Calculator | Permutation Calculator | |
|---|---|---|
| Category | Math | Math |
| Answers | C(n,r) | P(n,r) |
| Inputs | 2 | 2 |
| Result unit | — | — |
When to use each
Calculate the number of unordered selections of r items from n distinct items, where the order does not matter. Ideal for lottery draws, committees, and poker hands.
Calculate the number of ordered arrangements of r items chosen from n distinct items, where the order of selection matters. Ideal for rankings, sequences, and any selection where position counts.