These questions are based on the following letter / number/ symbol arrangement. Study it carefully and answer the questions that follow:
5 D G E _ 7 9 $ F 1 6 R % L I A J 3 B # 4 @ K P 8 U M 2
Four of the following five are alike in a certain way on the basis of their positions in the above arrangement and so form a group. Which is the one that does not belong to the group?