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Antonio Horcas Serrano
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Because (Z/55Z)* has no subgroups of order 8. Am I wrong ? In[89]:= FiniteGroupData[{"CyclicGroupUnits", 55}, "Subgroups"] Out[89]= {"Trivial", {"CyclicGroup", 2}, {"AbelianGroup", {2, 2}}, {"CyclicGroup", 4},...