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将底部的数字填入格子中，使横竖两个数都是 …
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每次乘以或者除以一个一位整数，保证每次的 …
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把从1到9的数字放在每个封闭区域中，这样 …
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在下述等式之间只添加加号或减号，使之成立 …
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花店老板用玫瑰、康乃馨和菊花做花束。 …
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