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Groups and FieldsHardSubgroups and Cyclic Groups

Subgroups and Cyclic Groups · Hard problem

Let G=⟨a⟩G = \langle a \rangle have order 7272. Let H=⟨a8⟩H = \langle a^8 \rangle and K=⟨a12⟩K = \langle a^{12} \rangle. How many elements belong to both HH and KK?