9、令A={1, 2, 3, 4, 5, 6, 7, 8, 9, 10},A1={1, 2, 3, 4},A2={5, 6, 7},A3={5, 7, 9},A4={4, 8, 10},A5={8, 9, 10},A6={1, 2, 3, 4, 6, 8, 10},A7={1, 2, 3, 6}。则以下的()不构成A的一个划分。A.{A1, A2, A5}B.{A3, A6}C.{A2, A3, A4}D.{A3, A4, A7}
9、令A={1, 2, 3, 4, 5, 6, 7, 8, 9, 10},A1={1, 2, 3, 4},A2={5, 6, 7},A3={5, 7, 9},A4={4, 8, 10},A5={8, 9, 10},A6={1, 2, 3, 4, 6, 8, 10},A7={1, 2, 3, 6}。则以下的()不构成A的一个划分。
A.{A1, A2, A5}
B.{A3, A6}
C.{A2, A3, A4}
D.{A3, A4, A7}
参考答案和解析
C 解析:这是一个质数数列,因此答案为C。
相关考题:
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