Eight persons M, N, O, P, Q, R, S and T all of them face north direction but not necessarily in same order. All of them stay in different floors viz 4th, 7th, 13th, 18th, 21th, 27th, 37st, 45th in a same building but not necessarily in same order. Highest value is considered as a top floor.

* P sits one of the extreme ends of the row and lives on 37th floor. O sits 4th from the right end and live on an even numbered floor. There are two persons sit between O and the person who lives on an even number floor.

* There are two persons sit between R and M and none of them lives on even number floor. R is not an immediate neighbor of P and O. T doesn’t sit at any of the extreme ends of the row.

* R lives on topmost floor. Only one person sits between M and T who lives on the floor which is 6th lowest prime number. The person who lives on 27th floor sits second to the left of T but he is not an immediate neighbor of P.

* S is not an immediate neighbor of R and sits an odd numbered floor. N and S is not an immediate neighbours. N lives an even numbered floor. Q lives one of the prime number floors. Neither 4th nor 18th numbered floor person lives any extreme end of the row. The person who lives on 13th floor is not the neighbor of the person who lives on 18th floor.