Direction :Study the following information carefully and answer the questions given below:
Ten persons L, M, N, O, P , Q, R, S, T, and U were born on two different dates 15 and 30 of five different months viz. January, March, April, September and November but not necessarily in the same order. L was born on 15th of the month which has 31 days. Three persons were born between L and P. Four persons were born between P and O. O was born before L. The number of persons were born after O is same as the number of persons born before N. One person was born between P and R. M was born before T but not in the month of January. T was born before P. U was born before S on same date.

Q:

Four of the following five are alike in a certain way and hence they form a group. Which one of the following does not belong to that group?

• 1
  Q-L
• 2
  R-P
• 3
  O-S
• 4
  P-N
• 5
  M-O