Direction: Study the following information carefully and answer the questions given below:
Eleven persons buy things one after another. Only five persons buy things after P. Three persons buy things between P and Q. R buy things after S and before T. There are as many persons buy things before U as after V. More than three persons buy things between W and X who buy things just after P. Y buy things before Z and after R. No one buy things after T. Y buy things just after V. U buys after Q.

Q:

Four of the following five are alike in certain way and hence form a group, find the one which does not belong to that group?

• 1
  QR
• 2
  UX
• 3
  WU
• 4
  XY
• 5
  PY