1+2+3+……2002+2003+2002+……+1=?
1+2+3+……2002+2003+2002+……+1=?
数学人气：521 ℃时间：2019-11-17 01:11:25
优质解答
1+2002=2+2001=3+2000……高斯定理.相加为2003的有2002项,还有个单独的2003,所以有2003个2003.答案：2003×2003=4012009
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