名校
1 . 集合
,
,集合
满足
,则
的个数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbae3753e49737eaefc0a8bbf69c5966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ae493785364e13ef1f5745003aa1027.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4d9fdc96aa972d87d040ba7c121f11b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
A.3 | B.4 | C.7 | D.8 |
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2 . 设集合
,集合
,则集合
的真子集个数
![](https://img.xkw.com/dksih/QBM/2016/11/20/1573161921454080/1573161927073792/STEM/f728b6be946e4c64afe495eeaeaffc1a.png)
![](https://img.xkw.com/dksih/QBM/2016/11/20/1573161921454080/1573161927073792/STEM/92c79542b4cd4b2ebe024ca37d17478a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
A.13 | B.14 |
C.15 | D.16 |
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3 . 已知全集
且
,则集合A的真子集的个数为个
![](https://img.xkw.com/dksih/QBM/2015/11/16/1572288965033984/1572288970686464/STEM/73028cc0938c486aadeef339ab4d34b3.png)
![](https://img.xkw.com/dksih/QBM/2015/11/16/1572288965033984/1572288970686464/STEM/9cc167a83ae54fa1b03395e9dc111e47.png)
A.6 | B.7 | C.8 | D.9 |
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