观察下面的变化规律:
,…根据上面的规律计算:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcf4f0d40612dba96cf2c0690407fc96.png)
_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7997d212e0355e3b5b226d52385abe6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcf4f0d40612dba96cf2c0690407fc96.png)
更新时间:2021-05-09 09:58:13
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【推荐1】将杨辉三角中的每一个数都换成分数,得到一个如图所示的分数三角形,称为莱布尼兹三角形,若用有序实数对
表示第m行,从左到右第n个数,如
表示分数
,那么
表示的分数是_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba7204f43679af6935e494c59d40c6ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/238f0ea276a00ae8d681ce00cc11c8ea.png)
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【推荐2】观察算式:
;
;
;
;
;
;…….则
的个位数字是_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca1546bc1b612817dfd205195b03e995.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4ade31e06d1dfbac197c057133c5246.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e78fec77be13b88b6b4a1d6e61a5c93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/781a73eb8bd1bef043152b8a898583cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ca86443b3a3452f563dd059859bd9d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c748dcf56d9eac9773c53e6309da1b8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b44a9461a2f47bb3f5172a446b20e83.png)
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