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What number should replace the question mark? [img]2018m11s/ct_eyyjsdz2018c_eyy
What number should replace the question mark? [img]2018m11s/ct_eyyjsdz2018c_eyy
游客
2023-10-20
33
管理
问题
What number should replace the question mark?
选项
答案
45
解析
(根据前两个图的规律可知,最左和最右的两个数字相乘,再减去最上方的数字,就能得出中心的数字。如12×6—9=63,15×5—19=56。而13×4—7=45,故问号应当填数字45。)
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