Eight persons Z,P,O,M,L,K,J and I lives on different flats in the same building having three floor. Ground floor is number 1 and to pfloor is number third but not necessarily in the same order. There are three flats on each floor-flat-1, flat-2 and flat-3 from west to east such that flat-1 of third floor is exactly above flat-1 of second floor which is just above flat-1 of first floor and other flats are placed in the same way. one of the flat is vacant.
Z lives in an even numbered flat and floor, K lives on one of the floors above M. three persons live on the floor in which K lives. Only two persons lives on the floor on which Z lives. L lives just above J who lives on the floors inw hich no flat is vacant. M lives just below the vacant flat, O lives on the flat which to the west of I. there is no flat to the east of K. the flat which is just below O is not vacant.
Q. Who among the following lives in flat 1 on third floor ?

Options

A. I
B. K
C. L
D. O

Answer

D

Explanation

Step 1: From the information given in the question.
K lives on one of the floors above M. three persons live on the floor in which K lives. There is not flat to the east of K. M lives just below the vacant flat. It means K lives on the third floor in the third flat and the vacant flat is on second floor. Z lives in the third flat and the vacant flat is on second floor. Z lives in an even numbered flat. only two persons lives on the floor on which Z lives. it means Z lives on second floor in the second flat. so there can be two possible cases,

Step 2: L lives just above J who lives on the floor in which no floor is vacant. L and J lives on the same flat. O lives on the flat which to the west of I but on the same floor as I.

Step 3: The flat which is just below O is not vacant. So case 2 will be eliminated.