问题:1f a is an odd nurnber,then there must exist an in
提问者:mdcg02
详细内容:

1f a is an odd nurnberthen there must exist an integer n such that a2—l =(    )

    (英汉小字典:odd number奇数;there must exist一定存在;such that使得)

 

    A3n    B5n    C8n    D16n

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