2025年教学资料:1.2集合之间的关系(分层作业)(解析版)
1.2集合之间的关系分层作业1.用适当的符号填空:(1)πQ;(2)Z;(3)3.5N;(4){0};(5){0,1}R.【答案】【分析】根据元素与集合的关系,以及集合与集合间的关系,逐个判定,即可求解.【详解】根据元素与集合的关系,以及集合与集合间的关系,可得:(1);(2);(3);(4);(5).故答案为:,,,,.2.下列五个写法:①;②;③;④;⑤,其中错误写法的个数为( )A.1B.2C.3D.4【答案】C【分析】根据“”用于元素与集合,“”用于集合与集合间判断出①⑤错,根据是不含任何元素的集合且是任意集合的子集判断出②④的对错;根据集合元素的三要素判断出③对.【详解】对于...
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