• 2022-06-06 问题

    The number of subgroups of order 25 of an Abelian group of order 50 is ( ). A: 0 B: 1 C: 2 D: 3

    The number of subgroups of order 25 of an Abelian group of order 50 is ( ). A: 0 B: 1 C: 2 D: 3

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