奧數問題解答
回答 (1)
2007-11-23 2:49 am
✔ 最佳答案
1/1x2=1/1-1/21/2x3=1/2-1/3
如此類推
=1/1-1/2+1/2-1/3+1/3-1/4+.........+1/99-1/100
=1/1-1/100
=1-1/100
=100/100-1/100
=99/100
參考: me
收錄日期: 2021-04-13 14:33:13
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20071122000051KK01457