1+2+3+4+5+6+7+8+9+10+...........+98+99+100
THE ANSWER IS IT 5050 ?
收錄日期: 2021-04-13 17:26:14
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20100606000051KK00585