2007-03-04 09:21:03可可豆

数学训练题0278

数学训练题0278
题目见图片
庞廷弘 2007-11-24 15:09:35

答:1,1/9,1/3,5/9
2,1/6,1/6,1/6,1/6,1/2,1/2