1/2001+2/2001+3/2001+4/2001+``````````+1999/2001+2001/2001

junjiexxx2022-10-04 11:39:541条回答

1/2001+2/2001+3/2001+4/2001+``````````+1999/2001+2001/2001
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无助的眼神共回答了25个问题 | 采纳率96%: 1/2001+2/2001+3/2001+4/2001+``````````+1999/2001+2001/2001=(1+2+3+4+……+2001)/2001=[(1+2000)*2000/2+2001]/2001=1001*2001/2001=1001; 1年前

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