在下面每題的五個數之間,添上適當的運算符號和 ( ) ,使算式成立。
(a) 4 4 4 4 4 = 10
(b) 5 5 5 5 5 = 10
(c) 9 9 9 9 9 = 10
數學趣味題
2010-07-14 1:55 am
回答 (2)
2010-07-14 2:01 am
✔ 最佳答案
(a) 4 + 4 + (4 + 4)/4 = 10(b) 5 x 5 - 5 - 5 - 5 = 10 or 5 + 5 + 5 x (5 - 5) = 10
(c) 9 + (9 / 9) x ( 9 / 9) = 10 or 9 + 9 - 9 + 9/9 = 10
收錄日期: 2021-04-21 22:13:31
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20100713000051KK01188