有多少個三位數，各位數字的和是4 ？
(只需輸入答案數字)
數學科問題
2007-01-24 5:12 pm
回答 (3)
2007-01-24 5:28 pm
✔ 最佳答案
103/112/121/130/202/211/220/301/310/40010個
2007-01-24 5:23 pm
103, 130, 301, 310, 202, 220, 112 , 211, 121, 400
2007-01-24 5:17 pm
400,103,130,310,301,202,220 共有7個
收錄日期: 2021-04-13 16:17:31
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070124000051KK00558