问题详情

A membership list of 720 people shows that 36 have first and last names that begin with the same letter. If a person is selected at random, what is the probability that his or her first and last name does NOT begin with the same letter？
A．0.05
B．0.25
C．0.50
D．0.75
E．0.95请帮忙给出正确答案和分析，谢谢！