已知集合
,
,则集合B中的元素个数为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a99736bc9b8bed9983d0b50041e7e01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f97d9356279ab702c98c6c68ebbdebc.png)
21-22高一上·河南商丘·阶段练习 查看更多[4]
更新时间:2021-10-19 11:07:08
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【推荐2】已知集合M=
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