找規(guī)律。
(1)20、30、40、5050、6060、7070;
(2)44、55、66、7777、8888、9999;
(3)![](https://img.jyeoo.net/quiz/images/svg/202306/52/ae2cd731.png)
![](https://img.jyeoo.net/quiz/images/202306/120/2878b095.png)
、![](https://img.jyeoo.net/quiz/images/202306/120/e0247547.png)
、![](https://img.jyeoo.net/quiz/images/202306/120/436221bb.png)
。
![](https://img.jyeoo.net/quiz/images/202306/120/2878b095.png)
![](https://img.jyeoo.net/quiz/images/202306/120/2878b095.png)
![](https://img.jyeoo.net/quiz/images/202306/120/e0247547.png)
![](https://img.jyeoo.net/quiz/images/202306/120/e0247547.png)
![](https://img.jyeoo.net/quiz/images/202306/120/436221bb.png)
![](https://img.jyeoo.net/quiz/images/202306/120/436221bb.png)
【考點】數(shù)列中的規(guī)律.
【答案】50;60;70;77;88;99;
;
;![](https://img.jyeoo.net/quiz/images/202306/120/436221bb.png)
![](https://img.jyeoo.net/quiz/images/202306/120/2878b095.png)
![](https://img.jyeoo.net/quiz/images/202306/120/e0247547.png)
![](https://img.jyeoo.net/quiz/images/202306/120/436221bb.png)
【解答】
【點評】
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發(fā)布:2024/5/4 8:0:8組卷:5引用:1難度:0.6