标题: 1月16日BJ努力回忆中,持续更新!PS:13年9月-12月使用过的寂静,各位整理君attention!! [打印本页] 作者: gryffindor1991 时间: 2014-1-25 22:23 标题: 1月16日BJ努力回忆中,持续更新!PS:13年9月-12月使用过的寂静,各位整理君attention!! 作文:
the company have new employee will cost a lot on traing them.It is a kind of lost in the productivity because the old empliyee have to spend time teaching the new ones.So the company should buy the programs since the cost of the program will bring more profit by let the new employee self-learning......
One box contain 10 balls,every box pick 3 to check if it is good of bad.If one of the three is bad ,the box will not be packed.So what's possobloty of picked box to have three bad balls?