Problem 7.
(i) Consider the cyclic group C18 of order 18. Determine
all the composition series of C18 then
verify the Jordan-Holder theorem for C18 (i.e. verify
that all those composition series have the same
length and the factors (after rearrangements) are isomorphic).
(ii) Give a composition series of A4.
(iii) Determine all the positive integers n such that the group Sn
is solvable.
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