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怎么将1-7这七个数，填入圆圈中，使得每条线上数字之和等于14？
怎么将1-7这七个数，填入圆圈中，使得每条线上数字之和等于14？
趣味数学，生活里的奥数，数学思维能力，数学故事，培优拓展专题83/136
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