Ten persons are living on ten different floors of the same building in such a way that the ground floor is numbered one, the one above floor is numbered two and so on till the topmost floor is numbered ten.
Only four persons are living above J. Two persons are living between J and S. Three persons are living between K and P, who lives one of the floors below K. P does not live on the ground floor. As many persons living between Q and R is same as the persons living between R and O. Q does not live below R. O does not live on the ground floor. As many persons living between Q and L is same as the persons living between S and M. N does not live on the odd numbered floor.
Solution :
