题目
已知集合A{0,1,2}若集合B={xx∈A}C={xx包含于A}用列举法表示集合B和C
提问时间:2020-12-23
答案
B={0,1,2}
C={0}或C={1}或C={2}或C={0,1}或C={0,2}或C={1,2}或C={0,1,2}
C={0}或C={1}或C={2}或C={0,1}或C={0,2}或C={1,2}或C={0,1,2}
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