規則﹕以下數字可用 加 ，減，乘，除，（ ）令答案變成 24 。不可用開方。く有２道＞
一. 5, 5, 5, 1
二. 7, 7, 3, 5
急！數學難題
2007-04-24 12:32 am
回答 (4)
2007-04-24 1:54 am
✔ 最佳答案
一. 5, 5, 5, 1 5 × (5 - 1 ÷ 5)
二. 7, 7, 3, 5
計唔到
2007-04-24 20:29:32 補充：
二. 7, 7, 3, 37× (3 + 3 ÷ 7)答案肯定是24下面那位，35 - 21好像不是24呀!所以下面的第二題是錯的。2) (7x5)-(3x7)=35-21≠24=14
參考: me
2007-04-25 10:10 pm
ALL RIGHT@o@!!!
2007-04-25 12:39 am
5乘(5-1/5)
lala !!!
lala !!!
2007-04-24 10:26 am
1) 5x[ 5 - ( 1/5)]
=(5x5) - (5x1/5)
=25-1
=24
2) (7x5)-(3x7)
=35-21
=24
2007-04-25 01:57:45 補充：
傻左...........係呀7 7 3 5 計錯.......7x(3+3/7)先 right=7x3 + 7x3/7=21+3=24haha............sorry~~~~
=(5x5) - (5x1/5)
=25-1
=24
2) (7x5)-(3x7)
=35-21
=24
2007-04-25 01:57:45 補充：
傻左...........係呀7 7 3 5 計錯.......7x(3+3/7)先 right=7x3 + 7x3/7=21+3=24haha............sorry~~~~
參考: ME....
收錄日期: 2021-04-12 21:38:15
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070423000051KK02150