奇數(shù)乘以奇數(shù)=奇數(shù)
奇數(shù)乘以偶數(shù)=偶數(shù)
所以a是偶數(shù)
如果17乘以a所得的積為偶數(shù),那么a是（）A.奇數(shù)B.偶數(shù)C.無法確定
如果17乘以a所得的積為偶數(shù),那么a是（）A.奇數(shù)B.偶數(shù)C.無法確定
數(shù)學人氣：411 ℃時間：2019-08-18 22:26:19
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