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problem 20

Problem 20

A x square is partitioned into unit squares. Each unit square is painted either white or black with each color being equally likely, chosen independently and at random. The square is then rotated clockwise about its center, and every white square in a position formerly occupied by a black square is painted black. The colors of all other squares are left unchanged. What is the probability the grid is now entirely black?


2015/6/12 20:05:35

Posted by DoctorZ | 阅读全文 | 回复(1) | 引用通告 | 编辑

Re:problem 20

one should easily geeralize this into n by n square problem
2015/6/12 20:15:08

Posted by doctorzhang | 个人主页 | 引用 | 返回 | 删除 | 回复

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