Thu 2023-05-11 . 11:51 AMGeneral position in chess: No-three-in-line problem. Thu 2023-05-11 . 11:51 AMGuessing a natural polynomial. Thu 2023-05-11 . 11:51 AMFrodo's number. Thu 2023-05-11 . 11:51 AM$G/Z(G)$ cyclic implies $G$ is abelian. Thu 2023-05-11 . 11:51 AMCenter of quarternion group. Thu 2023-05-11 . 11:51 AMThe 5/8 theorem, and the most abelian non-abelian groups.

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