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【OG20-P164-120题】
The sum of all the integers k such that −26 < k < 24 is
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题目:已知−26 < k < 24,那么k可取的所有整数和为多少?
解:由题可知,k可取的整数有-25,-24...23,其中从-23到23的所有整数和为0,因此所有k值得和为(-25)+(-24)=-49
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