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An example use of permutation in a speech by a native speaker of american english:

“… techniques are permutation ciphers let's …”

**noun:**

- A transformation of a set's prime form, by applying one or more of certain operations, specifically, transposition, inversion, and retrograde.
- One of the ways something exists, or the ways a set of objects can be ordered.
- A one-to-one mapping from a finite set to itself.
- An ordering of a finite set of distinct elements.