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What number should replace the question mark?[img]2021m3x/ct_ve01004001z2020c_e
What number should replace the question mark?[img]2021m3x/ct_ve01004001z2020c_e
游客
2023-10-12
72
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问题
What number should replace the question mark?
选项
答案
3.
解析
题干要求用正确的数字替代问号。通过观察发现规律如下:每一列的数字总和是以1,3,5,7顺序递增,到中间之后,再以相反的顺序即7,5,3,1顺序递减。所以中间一列的总和是7,由此推算出问号处应该是3(即7-1-2-1=3)。
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