A parking lot consists of a single row containing 26 parking spaces. Mary arrives when all spaces are free. Tom is the next person to arrive.

A parking lot consists of a single row containing 26 parking spaces. Mary arrives when all spaces are free. Tom is the next person to arrive. Each person makes an equally likely choice among all available spaces at the time of arrival. Describe the sample space. Obtain P(A), the probability the parking spaces selected by Mary and Tom are at most 2 spaces apart.