摘要:13.下列各数:.-.... .0.1010010001-..1.414.其中无理数有---------------------------- A. 2个 B. 3个 C. 4个 D. 5个
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将下列各数填入相应的括号内:
-6,9.3,-
,0,54,-0.333,1.41421356,-
,3.212212221…
负数集合:
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-6,9.3,-
| 1 |
| 6 |
| π |
| 2 |
负数集合:
{-6,-
,-0.333,-
,…}
| 1 |
| 6 |
| π |
| 2 |
{-6,-
,-0.333,-
,…}
,无理数集合:| 1 |
| 6 |
| π |
| 2 |
{-
,3.212212221…,…}
| π |
| 2 |
{-
,3.212212221…,…}
.| π |
| 2 |