Paper 3, Section II, D

For each of the following, either give an example or show that none exists.

(i) A non-abelian group in which every non-trivial element has order $2 .$

(ii) A non-abelian group in which every non-trivial element has order 3 .

(iii) An element of $S_{9}$ of order 18 .

(iv) An element of $S_{9}$ of order 20 .

(v) A finite group which is not isomorphic to a subgroup of an alternating group.

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