Question: A permutation, regarded as a function from the set {1,..., n} to itself, is one-to-one and onto. Therefore, each permutation has an inverse. (a) Find

A permutation, regarded as a function from the set {1,..., n} to itself, is one-to-one and onto. Therefore, each permutation has an inverse.
(a) Find the inverse of each 2-permutation.
(b) Find the inverse of each 3-permutation.
This summarizes our notation for the 2- and 3- permutations.

3-3 2 3 1 2 1 2231312 11 1 2 2 3 3 221 112

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