设 A 、B 、Ai
为集合.
(1)满足 A ∪ B ={a , b}的集合有序对(A , B)有多少对 ? 为什么 ?
(2)满足 A ∪ B ={a1 , a2 , …,
}的集合有序对(A , B)有多少对? 为什么?
(3)满足
的集合有序组
有多少组? 为什么 ?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18366abab3135d8f9d729e7c1653c0d2.png)
(1)满足 A ∪ B ={a , b}的集合有序对(A , B)有多少对 ? 为什么 ?
(2)满足 A ∪ B ={a1 , a2 , …,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
(3)满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1583ada8d174446c48327f36172c352.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5242055676c457a5639001a37a0cce45.png)
2001高三·上海·竞赛 查看更多[1]
更新时间:2018-12-15 17:48:01
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