Permutations
A permutation is an arrangement of objects in a specific order. It is used when the order of selection matters.
Permutation Formula
Example: Permutation
Special Cases
Permutations with Repetition
Example: Permutations with Repetition
Permutations of Identical Objects
Example: Identical Objects
Circular Permutations
Practice Problems
- Find .
- How many 4-letter words can be formed from the letters of COMPUTER (no repetition)?
- Find the number of arrangements of the letters in BOOKKEEPER.
- In how many ways can 5 people sit around a circular table?