ATT解锁机回国用什么联通计划?# PDA - 掌中宝
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1 楼
The keys to n boxes are placed randomly in the boxes, one per box, The boxes
are closed, which locks them. I would like to know the probability that
breaking open k random boxes will allow all the remaining boxes to be
unlocked. Could you help me please?
are closed, which locks them. I would like to know the probability that
breaking open k random boxes will allow all the remaining boxes to be
unlocked. Could you help me please?