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Exercises
Decoding a mixed up arrangement
Let the reader apply the permutation
1 --> 3, 2 --> 1, 3 --> 5, 4 --> 2, 5 --> 4
to the arrangement I,S,E,M,L to get a different second arrangement that is a genuine English word. Start with all five blanks empty for the second arrangement.
Reversing the arrangement
What permutation reverses the arrangement of five objects? If A,B,C,D,E is an arrangement, then E,D,C,B,A is the result of reversing it.