下列说法错误的是( )
A.![]() | B.![]() |
C.![]() | D.![]() ![]() |
更新时间:2024-03-05 21:10:41
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【推荐1】下列各数:
,
,
,
,
,0.101001…(每两个1之间的0逐渐增加一个)中,无理数有( )个.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/598564aec706dff769c5afc4c378c572.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1ad72d7565699d1ebb741eb0ce12bac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca5be7821872c2f83d39ffaea5216d09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cde029ac94c601540583c64bc48c17bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/646e0a8a80ed939e46bdaa54f3c2a248.png)
A.1 | B.2 | C.3 | D.4 |
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【推荐2】下列说法:①实数和数轴上的点是——对应的:②平方最小的实数是0;③
;④16的平方根是
,用式子表示是
,⑤某数的绝对值,相反数,算术平方根都是它本身,则这个数是0.其中正确的有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a15bde71f52ad6e7b91330ad2b991c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dcee5c0f947e3b4514661d46f77d170.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ac73f130a5ca1f2869fa35255d21345.png)
A.1个 | B.2个 | C.3个 | D.4个 |
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【推荐2】下列说法正确的是( )
A.![]() | B.![]() |
C.1的平方根是1 | D.![]() ![]() |
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名校
【推荐1】在下列各数:3.1415926、
、0.2、
、
、
、
中无理数的个数是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f742ce6f2345d41c984d537b2958b43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26f550b3f2e3571c6fb57cb524ed55f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/619096595112f0340a43b756e114dd3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c110c9e9d95d92f2f7de1040f91890c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8397629ac2094389cd991491413535c.png)
A.2个 | B.3个 | C.4个 | D.5个 |
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【推荐2】下列运算正确的是( )
A.2a+3b=5a | B.![]() |
C.![]() ![]() ![]() | D.![]() |
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【推荐1】实数
,
,
,
,
,
中,无理数的个数是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbc6a613224461ade69362d46550474.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94eecd59161d1a8dadbbef5184a628d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d0d7704614f7106d3e838c5c121b8f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86ebba6ed1add0fe647c0226614b9290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1ab7f3314e8ec1582bbe96dfdf46a0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f5d45b05ba7d0b0d20b7507b6806414.png)
A.0 | B.1 | C.2 | D.3 |
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【推荐2】实数
,0,-π,
,
,0.1010010001…(相邻两个1之间多一个0),其中是无理数的个数是( )个
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8397629ac2094389cd991491413535c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39f3fae1304b36c0aa24d98d4ae0508b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/598564aec706dff769c5afc4c378c572.png)
A.1 | B.2 | C.3 | D.4 |
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