题目内容
计算:
+
+
+…+
+
.
| 1 |
| 1×3 |
| 1 |
| 3×5 |
| 1 |
| 5×7 |
| 1 |
| 1993×1995 |
| 1 |
| 1995×1997 |
| 2 |
| m×3 |
| m |
| m |
| m |
| 3 |
| 2 |
| 3×5 |
| m |
| 3 |
| m |
| 5 |
| 2 |
| 5×7 |
| m |
| 5 |
| m |
| 7 |
…
| 2 |
| m993×m995 |
| m |
| m993 |
| m |
| m995 |
| 2 |
| m995×m997 |
| m |
| m995 |
| m |
| m997 |
所以:
| m |
| m×3 |
| m |
| 3×5 |
| m |
| 5×7 |
| m |
| m993×m995 |
| m |
| m995×m997 |
=
| m |
| 2 |
| 2 |
| m×3 |
| 2 |
| 3×5 |
| 2 |
| 5×7 |
| 2 |
| m993×m995 |
| 2 |
| m995×m997 |
=
| m |
| 2 |
| m |
| m |
| m |
| 3 |
| m |
| 3 |
| m |
| 5 |
| m |
| m993 |
| m |
| m995 |
| m |
| m995 |
| m |
| m997 |
=
| m |
| 2 |
| m |
| m |
| m |
| m997 |
=
| m |
| 2 |
| m996 |
| m997 |
=
| 996 |
| m997 |
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