下列各式计算正确的是( )
A.![]() | B.![]() |
C.![]() | D.![]() |
更新时间:2022-11-03 15:45:45
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【推荐1】已知数
、
、
在数轴上的位置如下图所示,满足
,则下列各式:①
;②
;③
;④
;正确的个数有( )个
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/3/0bb02e25-4694-42ea-bc35-36c6f2342b31.png?resizew=283)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faac62bd2b9359666cb0ad39e9ad7520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af328ff01a61f1e61f050fd1a481978b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56828e5a6812cc96c15810718006aa23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05cb9c654fc8ade6e195f0ab16707161.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e9a5353316e8d5a90e4684d0cdae666.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/3/0bb02e25-4694-42ea-bc35-36c6f2342b31.png?resizew=283)
A.4 | B.3 | C.2 | D.1 |
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【推荐2】“!”一种运算符号,并且1!=1,2!=1×2,3!=1×2×3,4!=1×2×3×4,…….则
=( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6c5e074f81d8bbaaf36b1bba528f279.png)
A.2020 | B.![]() | C.2019! | D.2! |
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