數學]數學iq題
2007-10-09 7:13 am
只限三次運算; 只用 '+' 或 '-' ; 1 至 9 之次序不能改 , 附合以上3個條件而使123456789 = 100 ,
回答 (2)
2007-10-09 8:31 am
✔ 最佳答案
.....123-45-67+89
=78-67+89
=11+89
=100
2007-10-10 1:35 am
123-45-67+89
=78-67+89
=11+89
=100
=78-67+89
=11+89
=100
收錄日期: 2021-04-29 19:43:19
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20071008000051KK04891