观察下列算式:
,
,
,
,
,
,
,
,
,根据上述算式中的规律,你认为
的末位数字是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/573cde866a43fa16637ef90f30f66dac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3195d9cd84a4d06ef1a6eb6bc026bdf5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/feae878a430a1b23774127547d842cb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e98ee95e5ee04de63ee34a524d5889d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef75ee6d803fb416fc4a655f25fdb648.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c7a54507c1804d2f6fd9ed10d0b7aab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54b1682f430812c19cef89667c9baf7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b9178632b71552645a767a9d9726677.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daa5e9bd516f6282483b92cfe6074623.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/909e84920c6f33b3bbb97a25b42bb840.png)
更新时间:2023-11-24 19:19:13
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【推荐1】若x1、x2、x3…x2022是一组由1和﹣1组成的数,且x1+x2+x3+…+x2022=﹣202,则(x1﹣1)2+(x2﹣1)2+(x3﹣1)2+…+(x2022﹣1)2的值为________ .
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【推荐2】观察下面的点阵图和相应的等式,探究其中的规律:
(1)在④和⑤后面的横线上分别写出相应的等式;
![](https://img.xkw.com/dksih/QBM/2018/10/17/2055589933621248/2061264408190976/STEM/863cd64217b04b00a47a98348f01b97a.png?resizew=544)
(2)根据上面算式的规律,请计算:1+3+5……+199= = .
(1)在④和⑤后面的横线上分别写出相应的等式;
![](https://img.xkw.com/dksih/QBM/2018/10/17/2055589933621248/2061264408190976/STEM/863cd64217b04b00a47a98348f01b97a.png?resizew=544)
(2)根据上面算式的规律,请计算:1+3+5……+199= = .
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【推荐1】我国古代数学家杨辉发现了如图所示的三角形,我们称为杨辉三角,从图中取一列数1,3,6,
,…记
,
,
,…则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abfbd63bbc16a77aa0a617e76244da33.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d07ae0b4264da6a8812454ffd2f20d94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2693734765399876e9e93cdb110231c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e8c45e4c4ab30665338dd87a2258f23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abfbd63bbc16a77aa0a617e76244da33.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/10/7b88a18e-2f91-43a9-919b-a88cdb8e93c6.png?resizew=138)
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【推荐2】直接写出下面这个算式的结果(用乘方的形式表示结果)并说出这个结果的个位数字![](https://staticzujuan.xkw.com/quesimg/Upload/formula/943e3d5440f7a15360f5f5226effde67.png)
______ .其个位数字是:_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/943e3d5440f7a15360f5f5226effde67.png)
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