Suppose that G grup, A subgroup of G and B Normal subgroup of G. Prove that...

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Suppose that G grup,

A subgroup of G and B Normal subgroup of G. Prove that Normal subgroup of G.

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solution; Given that is a group. - A is a subgroup of G ie ALG. - ß is a normal subpoup of chic. BAG. then we have to prove A

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