Question: need help; please add detail 5.1 For the group Sn of all permutations of n distinct symbols, what is the number of elements in Sn?
need help; please add detail
5.1 For the group Sn of all permutations of n distinct symbols, what is the number of elements in Sn? show that Sn is not abelian for n>2.
5.3 Consider the set S={a,b} with addition and multiplication defined by the following tables.

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