There are twelve persons named O, P, Q, R, S, T, U, V, W, X, Y and Z who live in a multistorey apartment. The apartment has three floors and each floor has four rooms. These 12 persons who live in a set of 12 Rooms can be represented by a Matrix of 3 rows and 4 columns.
Twelve persons: O, P, Q, R, S, T, U, V, W, X, Y, and Z
Three floors: Floor 1, Floor 2, Floor 3.
Four flats: Flat 1, Flat 2, Flat 3, Flat 4.
1) Q lives immediate left below diagonally of a person who lives immediate left below diagonally of T.
2) T lives immediate left above diagonally of a person who lives third to the right of V.
3) Q lives immediate left of a person who lives two rooms below W in the same column.
Floor/Flate 
Flate 1 
Flate 2 
Flate 3 
Flate 4 
Floor 1 

W 
T 

Floor 2 
V 



Floor 3 
Q 



4) R lives to the immediate right of a person who lives immediate right above diagonally of Q.
Floor/Flate 
Flate 1 
Flate 2 
Flate 3 
Flate 4 
Floor 1 

W 
T 

Floor 2 
V 

R 

Floor 3 
Q 



5) S lives immediate left above diagonally of a person who lives immediate left above diagonally of Z.
Floor/Flate 
Flate 1 
Flate 2 
Flate 3 
Flate 4 
Floor 1 
S 
W 
T 

Floor 2 
V 

R 

Floor 3 
Q 

Z 

6) X lives immediate right above diagonally of a person who lives immediate right below diagonally of O.
Floor/Flate 
Flate 1 
Flate 2 
Flate 3 
Flate 4 
Floor 1 
S 
W 
T 

Floor 2 
V 
O 
R 
X 
Floor 3 
Q 

Z 

7) P lives immediate right above diagonally of a person who lives immediate right above diagonally of Y.
8) Z is living to the immediate left of U who receives Rs. 46000 as salary.
Floor/Flate 
Flate 1 
Flate 2 
Flate 3 
Flate 4 
Floor 1 
S 
W 
T 
P 
Floor 2 
V 
O 
R 
X 
Floor 3 
Q 
Y 
Z 
U/ 46000 
9) The person who live on one of the floors (left to right) receive salary in the same order Rs. 50000, Rs. 48000, Rs. 47000 and Rs. 46000.
Floor/Flate 
Flate 1 
Flate 2 
Flate 3 
Flate 4 
Floor 1 
S 
W 
T 
P 
Floor 2 
V 
O 
R 
X 
Floor 3 
Q/ 50000 
Y/ 48000 
Z/ 47000 
U/ 46000 
10) The person who live on one of the floors (left to right) receive salary in the same order Rs. 37000, Rs. 42000, Rs. 36000 and Rs. 43000.
Floor/Flate 
Flate 1 
Flate 2 
Flate 3 
Flate 4 
Floor 1 
S 
W 
T 
P 
Floor 2 
V/ 37000 
O/ 42000 
R/ 36000 
X/ 43000 
Floor 3 
Q/ 50000 
Y/ 48000 
Z/ 47000 
U/ 46000 
11) The person who live on one of the floors (right to left) receive salary in the same order Rs. 45000, Rs. 38000, Rs. 35000 and Rs. 40000.
Floor/Flate 
Flate 1 
Flate 2 
Flate 3 
Flate 4 
Floor 1 
S/ 40000 
W/ 35000 
T/ 38000 
P/ 45000 
Floor 2 
V/ 37000 
O/ 42000 
R/ 36000 
X/ 43000 
Floor 3 
Q/ 50000 
Y/ 48000 
Z/ 47000 
U/ 46000 
Salary of Y = 48000
Salary of P = 45000
Sum of salary of Y and P = 48000 + 45000 = 93000
Hence, "93000" is the correct answer.