8 8 ? 8 8
21, 77 ? 285,437
?係乜
問一條數學題
2011-03-28 4:29 am
回答 (1)
2011-03-28 6:52 am
✔ 最佳答案
8 8 8 8 8 21, 77, 165, 285,437
21 = 3 x 7 [3 x (3+4)]
77 = 7 x 11 [7 x (7+4)]
165 = 11 x 15 [11 x (11+4)]
285 = 15 x 19 [15 x (15+4)]
437 = 19 x 23 [19 x (19+4)]
收錄日期: 2021-04-13 17:53:34
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20110327000051KK01054