题目内容
(
-
+
)×1001.
| 2 |
| 7 |
| 3 |
| 11 |
| 1 |
| 13 |
(
-
+
)×1001,
=
×1001-
×1001+
×1001,
=286-273+77,
=13+77,
=90.
| 2 |
| 7 |
| 3 |
| 11 |
| 1 |
| 13 |
=
| 2 |
| 7 |
| 3 |
| 11 |
| 1 |
| 13 |
=286-273+77,
=13+77,
=90.
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