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G Let G be a not necessarily abelian group with normal subgroups H and K such that H contains K (i. e., K ✂ G, H ✂ G, K ≤ H) and such that G/K is an abelian group. Prove that G/H is an abelian group also.
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G Let G be a not necessarily abelian group with normal subgroups H and K such that H contains K (i....
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