The set {1, 9, 16, 22, 29, 53, 74, 79, 81} is a group
Chapter 11, Problem 21E(choose chapter or problem)
The set {1, 9, 16, 22, 29, 53, 74, 79, 81} is a group under multiplication modulo 91. Determine the isomorphism class of this group.
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