a dry cleaner gives 4 identical shirts randomly to 4 people, where each person owns one shirt. what is the probability of at least one person getting his own shirt?
the answer is 175 / 256
i figured out the 256, which is the total number of situations, which is 4^4
i just can not figure out how we get 175
the answer is 175 / 256
i figured out the 256, which is the total number of situations, which is 4^4
i just can not figure out how we get 175