题目内容
用1,2,3,4,5,6,7,8,9这九个数字写出三个大小相等的分数.(每个数字只允许用一次).
例如:
=
=
.
例如:
| 3 |
| 6 |
| 7 |
| 14 |
| 29 |
| 58 |
符合条件的分数有:
(1)
=
=
;
(2)
=
=
;
(3)
=
=
;
(4)
=
=
;
(5)
=
=
.(答案不唯一)
(1)
| 3 |
| 21 |
| 7 |
| 49 |
| 8 |
| 56 |
(2)
| 3 |
| 6 |
| 7 |
| 14 |
| 29 |
| 58 |
(3)
| 3 |
| 6 |
| 9 |
| 18 |
| 27 |
| 54 |
(4)
| 3 |
| 27 |
| 6 |
| 54 |
| 9 |
| 81 |
(5)
| 2 |
| 4 |
| 3 |
| 6 |
| 79 |
| 158 |
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