Reasoning Quiz For SSC CHSL Exam

Direction (1-10):  select the related letters/word/number from the given alternative.
1. 13 : 45 :: 17 : ?
(A)41  
(B)57
(C)31  
(D)73


2. 15 : 35 :: 63 : ?
(A)110
(B)143
(C)99
(D)159

3. 56 : 72 :: 110 : ?
(A)132
(B)99
(C)121 
(D)110

4. CAMP : XZNK :: ? : HZOG
(A)SALT
(B)ALSO
(C)SOUR
(D)ARMY

5. HOUSE : WALLS :: WALLS : ?
(A)CLAY
(B)SAND
(C)BRICKS
(D)CEMENT

6. ABCD : MNOP :: CFIL : ?
(A)ORUX 
(B)CRUX
(C)ORUY
(D)DROY

7. EFGH: NOPQ: : IJKL : ?
(A)PQRS 
(B)RSTU
(C)VWXY 
(D)WXYZ

8. RANDOM : ADMNOR :: PROJECT : ?
(A)PJORTC 
(B)PORJCET
(C)CEOPRTJ 
(D)CEJOPRT

9. 12 : 5 :: 21 : ?
(A)10
(B)7
(C)8                
(D)5

10. 25 : 125 :: 36 : ?
(A)216
(B)360
(C)400
(D)720

Answer and Solution:
1.(b) 45 = 13*3+6. So, 17*3+6=57.
2.(c) 15=3*5; 35=5*7; 63=7*9. So, next number is 9*11=99.
3.(a) 56 and 72 are numbers formed by 7*8 and 8*9. So, since, 110 is 10*11, next should be 11*12.
4.(a) CAMP is coded by writing its equivalent position from other end of the alphabet sequence. Similarly, HZOG was coded from SALT.
5.(c) As a House is made up by Walls, similarly, Walls are primarily made up by Bricks.
6.(a) In the group ABCD, each letter is shifted 12 positions in alphabetical sequence to get MNOP. Similarly, CFIL can be converted to ORUX.
7.(b) In the group EFGH, each letter is shifted 9 letters to get NOPQ. Similarly, IJKL can be converted to RSTU.
8.(d) In the group RANDOM, the order of letters is put according to alphabetical sequence to get ADMNOR. Similarly, PROJECT can be converted to CEJOPRT
9.(d) 5 is the sum of squares of digits of 12.
10.(a) 25 and 125 are square and cube values of 5. Since, 36 is the square value of 6, then next should be cube value of 6, i.e 216.