下列说法正确的有( )
①; ②; ③; ④; ⑤.
①; ②; ③; ④; ⑤.
A.1个 | B.2个 | C.3个 | D.4个 |
更新时间:2023-10-20 20:16:02
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【知识点】 判断元素与集合的关系解读
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单选题
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较易
(0.85)
【推荐2】在下列各式中错误的个数是
①1∈{0,1,2};
②{1}∈{0,1,2};
③{0,1,2}⊆{0,1,2};
④{0,1,2}={2,0,1};
⑤{0,1}⊆{(0,1)};
⑥∅⊆{0}
①1∈{0,1,2};
②{1}∈{0,1,2};
③{0,1,2}⊆{0,1,2};
④{0,1,2}={2,0,1};
⑤{0,1}⊆{(0,1)};
⑥∅⊆{0}
A.1 | B.2 | C.3 | D.4 |
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