math!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
回答 (1)
2008-02-15 6:46 am
✔ 最佳答案
1/4 x 1/3 + 3/4 x 1/3--------------------------------------------------
1/4 x 1/3 + 3/4 x 1/3 + 1/4 x 2/3
=2/3
參考: me
收錄日期: 2021-04-27 12:05:54
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20080214000051KK04690