题目内容
-
-
-
的值等于( )
| 191919 |
| 939393 |
| 190190 |
| 930930 |
| 19001900 |
| 93009300 |
| A.-3 | B.-
| C.-1 | D.-
|
-
-
-
=-(
+
+
)
=-
×3
=-
.
故选B.
| 191919 |
| 939393 |
| 190190 |
| 930930 |
| 19001900 |
| 93009300 |
=-(
| 19×10101 |
| 93×10101 |
| 190×1001 |
| 930×1001 |
| 1900×10001 |
| 9300×10001 |
=-
| 19 |
| 93 |
=-
| 19 |
| 31 |
故选B.
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