Home Subjects Reasoning Ability Coding-Decoding

Reasoning Ability
Coding-Decoding

Critical thinking and logical reasoning questions

21 Q 8 Topics Take Mock Test
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Difficulty: All Easy Medium Hard 11–20 of 21
Topics in Reasoning Ability
Q.11 Easy Coding-Decoding
Series: 2, 6, 18, 54, 162, ?
A 486
B 324
C 512
D 408
Correct Answer:  A. 486
EXPLANATION

Each term is multiplied by 3. 162 × 3 = 486

Test
Q.12 Easy Coding-Decoding
In a family, P is the mother of Q, R is the father of Q, S is the brother of Q, and T is the daughter of S. How is T related to P?
A Granddaughter
B Great-granddaughter
C Daughter
D Sister
Correct Answer:  A. Granddaughter
EXPLANATION

T is the daughter of S. S is the brother of Q. Q is the son/daughter of P. Therefore, T is the granddaughter of P.

Test
Q.13 Easy Coding-Decoding
In a coding system, BRAIN is coded as 2-18-1-9-14. What will be the code for THINK?
A 20-8-9-14-11
B 19-7-8-13-10
C 21-9-10-15-12
D 20-8-9-13-11
Correct Answer:  A. 20-8-9-14-11
EXPLANATION

Each letter is coded as its position in the alphabet. T=20, H=8, I=9, N=14, K=11

Test
Q.14 Easy Coding-Decoding
1, 4, 9, 16, 25, ?
A 36
B 35
C 37
D 49
Correct Answer:  A. 36
EXPLANATION

Series of perfect squares: 1²=1, 2²=4, 3²=9, 4²=16, 5²=25, 6²=36.

Test
Q.15 Easy Coding-Decoding
CAR is to AUTOMOBILE as FLOWER is to ?
A PLANT
B PETAL
C BLOOM
D STEM
Correct Answer:  A. PLANT
EXPLANATION

CAR is a specific example of AUTOMOBILE (category). FLOWER is a specific example of PLANT (category). The relationship is specific to general.

Test
Q.16 Easy Coding-Decoding
3, 6, 12, 24, 48, ?
A 72
B 84
C 96
D 108
Correct Answer:  C. 96
EXPLANATION

Each number is multiplied by 2. 3×2=6, 6×2=12, 12×2=24, 24×2=48, 48×2=96.

Test
Q.17 Easy Coding-Decoding
BOOK is to READ as FOOD is to ?
A EAT
B TASTE
C COOK
D HUNGER
Correct Answer:  A. EAT
EXPLANATION

BOOK is something you READ. FOOD is something you EAT. The relationship is purpose/action.

Test
Q.18 Easy Coding-Decoding
A is mother of B, B is sister of C, D is father of C. How is A related to D?
A Wife
B Sister
C Daughter
D Aunt
Correct Answer:  A. Wife
EXPLANATION

A is mother of B, B is sister of C means A is also mother of C. D is father of C. Therefore, A is wife of D.

Test
Q.19 Easy Coding-Decoding
If TIGER is coded as 5-9-7-5-18, what is the code for LION?
A 12-9-15-14
B 11-8-14-13
C 12-9-14-13
D 13-9-15-14
Correct Answer:  A. 12-9-15-14
EXPLANATION

T=20→5, I=9→9, G=7→7, E=5→5, R=18→18. Pattern: Position in alphabet. L=12, I=9, O=15, N=14. Code = 12-9-15-14.

Test
Q.20 Easy Coding-Decoding
In a row of 8 people, A is sitting at position 3 from left. B is sitting 2 positions to the right of A. C is sitting to the immediate right of B. What is the position of C from the left?
A 5
B 6
C 7
D 8
Correct Answer:  B. 6
EXPLANATION

A is at position 3 from left. B is 2 positions right of A, so B is at position 3+2=5. C is immediate right of B, so C is at position 5+1=6.

Test
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