1x1+2x1x2+3x1x2x3+.......+8x1x2x3x4x5x6x7x8
回答 (2)
2006-11-28 5:59 am
✔ 最佳答案
362879 
2006-11-28 5:53 am
1x1=1
2x1x2=4
3x1x2x3=18
4x1x2x3x4=96
5x1x2x3x4x5=600
6x1x2x3x4x5x6=4320
7x1x2x3x4x5x6x7=35280
8x1x2x3x4x5x6x7x8=322560
1+4+18+96+600+4320+35280+322560=362879
應該岩掛*
2x1x2=4
3x1x2x3=18
4x1x2x3x4=96
5x1x2x3x4x5=600
6x1x2x3x4x5x6=4320
7x1x2x3x4x5x6x7=35280
8x1x2x3x4x5x6x7x8=322560
1+4+18+96+600+4320+35280+322560=362879
應該岩掛*
參考: 自己計*蠢﹏XDD
收錄日期: 2021-04-12 22:31:39
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20061127000051KK04790