Each of four different locks has a matching key. The keys are randomly reassigned to the locks. What is the probability that exactly two of the keys fit the locks to which they are reassigned?
Choose the correct choice from the following answers:	A) 1/8	B) 1/6	C) 1/4	D) 3/8	E) 1/2
Total # of ways to assign the keys to the locks is 4!4!.   C^24 to choose which 2 keys will fit. Other 2 keys can be arranged only one way.   So P=1/4^24/4!=14   Answer: 1/4.
<result>C</result>
Each of four different locks has a matching key. The keys are randomly reassigned to the locks. What is the probability that exactly two of the keys fit the locks to which they are reassigned?