将0.3;0.6;0.9;1.2;1.5;1.8;2.1;2.4;2.7九个数填在方格中,使各行个列及对角线上的三个数的和均相等
人气:271 ℃ 时间:2019-09-17 00:39:57
解答
0.6 2.7 1.2
2.1 1.5 0.9
1.8 0.3 2.4
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