问个概率问题 (转载)# BrainTeaser - 大脑工作室
z*t
1 楼
【 以下文字转载自 shopping 讨论区 】
发信人: zassault (如松之盛), 信区: shopping
标 题: 趁人多,问个概率问题
发信站: BBS 未名空间站 (Thu Sep 20 21:54:00 2007)
实在想得头大了
第一个答对的 奖励5个包子
We place at random n particles in m>n boxes. Find probability p that the
particles will be in n pre-selected boxes, one in each box. Solve the
problem
for the following three cases:
i. Particles are distinguishable.
ii. Particles are not distinguishable.
iii. Particles are not distinguishable and only one particle can be placed
in each box.
发信人: zassault (如松之盛), 信区: shopping
标 题: 趁人多,问个概率问题
发信站: BBS 未名空间站 (Thu Sep 20 21:54:00 2007)
实在想得头大了
第一个答对的 奖励5个包子
We place at random n particles in m>n boxes. Find probability p that the
particles will be in n pre-selected boxes, one in each box. Solve the
problem
for the following three cases:
i. Particles are distinguishable.
ii. Particles are not distinguishable.
iii. Particles are not distinguishable and only one particle can be placed
in each box.
