Statistics and probability
Permutation
An ordered arrangement of selected objects, so changing the order creates a different outcome.
In one sentence
What does Permutation mean?
An ordered arrangement of selected objects, so changing the order creates a different outcome.
How it is written
P(n,r)=n!/(n−r)!
A compact example
Choosing president and vice-president from 5 people gives 5×4=20 permutations.
Other names and search terms
ordered arrangement.
Where this fits
When should you learn Permutation?
The first encounter is not the final level. Many ideas begin visually, become computational in high school and become formal in college.
- 1Pre-high schoolPrepare foundations
- 2High schoolUsually introduced
- 3CollegeGreater depth
- 4AdvancedGreater depth
- Statistics
- Probability
- Fractions
- Percentages
- Sets
- Distributions
- Inference
- Quantum probability
Quantum predictions are expressed through probabilities and expected values.
Open the Zero-to-QM pathClear answers
Questions about Permutation
What does Permutation mean in mathematics?
An ordered arrangement of selected objects, so changing the order creates a different outcome.
How is Permutation written?
A common notation is P(n,r)=n!/(n−r)!.
What is an example of Permutation?
Choosing president and vice-president from 5 people gives 5×4=20 permutations.