Seven persons M, N, O, P, Q, R and S sit in a linear row from the west to the east end and face in the north direction, but not necessarily in the same order.
Either two or three persons sit between O and N. N sits third from the east end of the row.
M sits immediate to the right of Q. Atleast four persons sit between M and S.
Two persons sit between P and S. Thus, case 2 is invalid.
Therefore, the final arrangement is:
Except Q-O, in all other pairs, only one person sits between the mentioned two persons.
Study Notes
Category
