名校
1 . 集合
的真子集个数为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17a594d05549e6fb2f441fad0f65dcd3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11d71379442f28c038d367d49422cf90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
A.3 | B.4 | C.7 | D.8 |
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2017-05-25更新
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1050次组卷
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5卷引用:甘肃省庆阳市宁县二中2019届高三上学期第一次月考数学(理)试题