已知集合
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bb8634a67a157c01f3db175d8e70b4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e8074f2969e8c937a8cf7a1ddb8036e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4b9b470218359a4a47be9244980489e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
更新时间:2020-10-19 19:41:28
|
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单选题
|
较易
(0.85)
解题方法
【推荐1】若集合
.集合
,则
的真子集个数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8415dfc6a57497d7f5210a5b8f27e189.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8e0d08b9b9e05554a6cbb83e99d1fc8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
A.3 | B.4 | C.31 | D.32 |
您最近一年使用:0次
单选题
|
较易
(0.85)
名校
解题方法
【推荐1】已知集合
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4b9b470218359a4a47be9244980489e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0f373634fcb84c4c508a0684371581f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3e233ce5403bc46468a1ddf0ad4a6ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4b9b470218359a4a47be9244980489e.png)
A.(3,4) | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
单选题
|
较易
(0.85)
解题方法
【推荐2】设集合
,
,则集合
中元素的个数是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca54c00a4491e3f7660dd81c1896ea1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/beb558afe36e7811d87f8f55943482e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
A.1 | B.2 | C.3 | D.4 |
您最近一年使用:0次