设集合
,则
等于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/451effaaa8810356db04d3645f529620.png)
![](https://img.xkw.com/dksih/QBM/2013/11/26/1571404579332096/1571404584706048/STEM/1ac8e70d6a22475d85dd07cecd9f42e1.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
13-14高三上·甘肃临夏·期中 查看更多[2]
更新时间:2016-12-02 13:33:25
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【推荐1】已知集合
,
,则集合
的真子集的个数是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e301a893b4e5f9ed35fd913db9c32c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd55974d5348f9677d7282153eb4a459.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
A.8 | B.7 | C.4 | D.3 |
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