已知集合
,
,
,则P的子集共有
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d216372e8bf70766feb2584f1096888.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fabbd1137c42cc6a317369f47235261b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca86d78df9a99366aa59c2ff110fa37a.png)
A.8个 | B.6个 | C.4个 | D.2个 |
更新时间:2016-12-04 09:07:17
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