arXiv · 1605.00193
We study the number of cylic subgroups in finite groups and get that $G$ has $|G|-3$ cyclic subgroups if and only if $G \cong D_{10}$ or $Q_8$.
Wei Zhou. 2016-05-01. On the number of cyclic subgroup in finite groups. https://arxiv.org/abs/1605.00193
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