
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,每个数字只能用一次
1个回答
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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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