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Groups and FieldsHardDirect Products and Finite Abelian Groups

Direct Products and Finite Abelian Groups · Hard problem

G=Z30×Z18G=\mathbb Z_{30}\times\mathbb Z_{18}, order 540540. Let H=⟨(1,1)⟩H=\langle(1,1)\rangle. What is [G:H][G:H]?