Coding-Decoding MCQ & Objective Questions
Coding-Decoding is a crucial topic in various competitive exams and school assessments. Mastering this concept not only enhances your logical reasoning skills but also boosts your confidence in tackling objective questions. Practicing Coding-Decoding MCQs and important questions can significantly improve your exam preparation and help you score better.
What You Will Practise Here
Understanding the basics of Coding-Decoding
Types of coding methods: direct, indirect, and symbolic
Common coding techniques used in exams
Practice questions on letter and number coding
Identifying patterns in Coding-Decoding problems
Solving Coding-Decoding puzzles and riddles
Tips and tricks for quick problem-solving
Exam Relevance
Coding-Decoding is frequently featured in CBSE, State Boards, NEET, JEE, and other competitive exams. Students can expect questions that require them to decode messages or identify patterns in sequences. Common question patterns include finding the code for a word, decoding a given code, or solving puzzles that involve logical reasoning. Familiarity with these patterns will enhance your ability to tackle such questions effectively.
Common Mistakes Students Make
Overlooking the importance of sequence and order in coding
Misinterpreting symbols or codes due to lack of practice
Failing to identify the type of coding used in a question
Rushing through questions without analyzing all options
FAQs
Question: What are Coding-Decoding MCQ questions?Answer: Coding-Decoding MCQ questions are objective questions that test your ability to understand and interpret coded messages or patterns.
Question: How can I improve my skills in Coding-Decoding?Answer: Regular practice of Coding-Decoding objective questions with answers will help you improve your skills and boost your confidence.
Start solving practice MCQs today to test your understanding of Coding-Decoding. With consistent effort, you can master this topic and enhance your performance in exams!
Q. If '1' is coded as 'A', '2' as 'B', ..., '26' as 'Z', what letter corresponds to '20'?
Show solution
Solution
'20' corresponds to 'T' in the alphabet.
Correct Answer:
A
— T
Learn More →
Q. If '1' is coded as 'A', '2' as 'B', and so on, what letter corresponds to '26'?
Show solution
Solution
'26' corresponds to 'Z', the 26th letter of the alphabet.
Correct Answer:
A
— Z
Learn More →
Q. If '123' is coded as 'XYZ', what is the code for '456'?
A.
ABC
B.
DEF
C.
GHI
D.
JKL
Show solution
Solution
The pattern suggests that '123' corresponds to 'XYZ', so '456' corresponds to 'DEF'.
Correct Answer:
B
— DEF
Learn More →
Q. If '123' is coded as 'XYZ', what is the code for '789'?
A.
UVW
B.
XYZ
C.
ABC
D.
DEF
Show solution
Solution
Following the same pattern, '7' = 'U', '8' = 'V', '9' = 'W'.
Correct Answer:
A
— UVW
Learn More →
Q. If '123' represents 'ABC', what does '321' represent? (2023)
A.
CBA
B.
ABC
C.
BAC
D.
ACB
Show solution
Solution
321 is the reverse of 123, thus it represents CBA.
Correct Answer:
A
— CBA
Learn More →
Q. If 'A' = 1, 'B' = 2, 'C' = 3, what is the sum of the codes for 'CAB'?
Show solution
Solution
'C' = 3, 'A' = 1, 'B' = 2; sum = 3 + 1 + 2 = 6.
Correct Answer:
B
— 7
Learn More →
Q. If 'A' = 1, 'B' = 2, ..., 'Z' = 26, what is the code for 'HELLO'?
A.
851212
B.
851211
C.
851213
D.
851214
Show solution
Solution
'H' = 8, 'E' = 5, 'L' = 12, 'L' = 12, 'O' = 15; so 'HELLO' = '851212'.
Correct Answer:
A
— 851212
Learn More →
Q. If 'A' = 1, 'B' = 2, ..., 'Z' = 26, what is the code for 'ZEBRA'?
A.
26-5-2-18-1
B.
26-5-2-17-1
C.
25-5-2-18-1
D.
26-5-2-18-0
Show solution
Solution
'Z' is 26, 'E' is 5, 'B' is 2, 'R' is 18, 'A' is 1, so 'ZEBRA' is coded as '26-5-2-18-1'.
Correct Answer:
A
— 26-5-2-18-1
Learn More →
Q. If 'A' = 1, 'B' = 2, ..., 'Z' = 26, what is the sum of the codes for 'BAD'?
Show solution
Solution
'B' = 2, 'A' = 1, 'D' = 4; sum = 2 + 1 + 4 = 7.
Correct Answer:
B
— 5
Learn More →
Q. If 'A' = 1, 'B' = 2, ..., 'Z' = 26, what is the sum of the codes for 'HELLO'?
Show solution
Solution
H(8) + E(5) + L(12) + L(12) + O(15) = 52.
Correct Answer:
B
— 53
Learn More →
Q. If 'A' = 1, 'B' = 2, ..., what is the code for 'Z'?
Show solution
Solution
'Z' is the 26th letter of the alphabet, so it is coded as '26'.
Correct Answer:
B
— 26
Learn More →
Q. If 'A' = 1, 'B' = 2, and 'C' = 3, what is the code for 'E'?
Show solution
Solution
'E' is the 5th letter of the alphabet, so it is coded as '5'.
Correct Answer:
B
— 5
Learn More →
Q. If 'A' = 1, 'B' = 2, and 'C' = 3, what is the sum of the codes for 'CAB'?
Show solution
Solution
'C' = 3, 'A' = 1, 'B' = 2; sum = 3 + 1 + 2 = 6.
Correct Answer:
B
— 7
Learn More →
Q. If 'A' is coded as '1', 'B' as '2', and so on, what is the code for 'D'?
Show solution
Solution
'D' is the 4th letter of the alphabet, so it is coded as '4'.
Correct Answer:
C
— 4
Learn More →
Q. If 'A' is coded as '1', 'B' as '2', and so on, what is the sum of the codes for 'CAB'?
Show solution
Solution
'C' is 3, 'A' is 1, 'B' is 2; sum is 3 + 1 + 2 = 6.
Correct Answer:
B
— 7
Learn More →
Q. If 'A' is coded as 'Z', 'B' as 'Y', and so on, what is the code for 'X'?
Show solution
Solution
'X' is the 24th letter, and its opposite in this code is 'Y'.
Correct Answer:
A
— Y
Learn More →
Q. If 'A' is coded as 'Z', 'B' as 'Y', what is the code for 'E'?
Show solution
Solution
'E' is the 5th letter, so it is coded as 'V' (22nd letter from the end).
Correct Answer:
A
— V
Learn More →
Q. If 'A' is replaced by '@', 'B' by '#', and 'C' by '$', what is the code for 'CAB'?
A.
$#@
B.
@#$
C.
#$@
D.
@#
Show solution
Solution
'C' = '$', 'A' = '@', 'B' = '#', so 'CAB' = '@#$'.
Correct Answer:
B
— @#$
Learn More →
Q. If 'A' is replaced by '@', 'B' by '8', and 'C' by '(', what is the code for 'CAB'?
A.
@8(
B.
@(8
C.
8(@
D.
(8@
Show solution
Solution
'C' = '(', 'A' = '@', 'B' = '8'; thus 'CAB' = '@(8'.
Correct Answer:
B
— @(8
Learn More →
Q. If 'A' is replaced by 'Z', 'B' by 'Y', and so on, what is the code for 'HELLO'?
A.
SVOOL
B.
SVNNO
C.
SVOOL
D.
SVNLO
Show solution
Solution
Using reverse coding, 'H' becomes 'S', 'E' becomes 'V', 'L' becomes 'O', and 'O' becomes 'L', so 'HELLO' is 'SVOOL'.
Correct Answer:
A
— SVOOL
Learn More →
Q. If 'APPLE' is coded as 'BQQMF', what is the code for 'GRAPE'?
A.
HSBQF
B.
HSBPE
C.
HSBPD
D.
HSBPG
Show solution
Solution
Each letter is shifted by +1. G+1=H, R+1=S, A+1=B, P+1=Q, E+1=F. So, GRAPE = HSBQF.
Correct Answer:
A
— HSBQF
Learn More →
Q. If 'APPLE' is coded as 'ZKOVO', what is the code for 'ORANGE'? (2022)
A.
LIZMVT
B.
LIZMUT
C.
LIZMOT
D.
LIZMPT
Show solution
Solution
Each letter is replaced by its reverse in the alphabet. O -> L, R -> I, A -> Z, N -> M, G -> T, E -> V. So, ORANGE = LIZMVT.
Correct Answer:
A
— LIZMVT
Learn More →
Q. If 'BAT' is coded as 'CBU', how is 'CAT' coded? (2022)
A.
DBU
B.
DBT
C.
DBA
D.
DCA
Show solution
Solution
Each letter is shifted by +1. C -> D, A -> B, T -> U. So, CAT = DBU.
Correct Answer:
A
— DBU
Learn More →
Q. If 'BOOK' is coded as 'CPPL', what is the code for 'READ'?
A.
SFBF
B.
SFBG
C.
SFBH
D.
SFBJ
Show solution
Solution
Each letter is shifted by +1. 'R' to 'S', 'E' to 'F', 'A' to 'B', 'D' to 'E'.
Correct Answer:
A
— SFBF
Learn More →
Q. If 'BRAIN' is coded as 'CSPJO', what is the code for 'HEART'?
A.
IFBSU
B.
IFBRT
C.
IFBQS
D.
IFBQT
Show solution
Solution
Each letter is shifted by +1. H -> I, E -> F, A -> B, R -> S, T -> U. So, HEART = IFBSU.
Correct Answer:
A
— IFBSU
Learn More →
Q. If 'CAT' is coded as '3120', how is 'DOG' coded?
A.
4157
B.
4156
C.
4167
D.
4158
Show solution
Solution
'D' is 4, 'O' is 15, 'G' is 7. So, DOG = 4157.
Correct Answer:
A
— 4157
Learn More →
Q. If 'CIRCLE' is coded as 'DJSDFM', how is 'SQUARE' coded? (2023)
A.
TQVBQF
B.
TQUBQF
C.
TQUBQE
D.
TQUBQD
Show solution
Solution
Each letter is shifted by +1. S->T, Q->R, U->V, A->B, R->S, E->F. So, SQUARE = TQVBQF.
Correct Answer:
A
— TQVBQF
Learn More →
Q. If 'COLD' is coded as 'DPEM', what is the code for 'WARM'?
A.
XBSN
B.
XBSM
C.
XBSO
D.
XBSK
Show solution
Solution
Each letter is shifted by +1. 'W' to 'X', 'A' to 'B', 'R' to 'S', 'M' to 'N'.
Correct Answer:
A
— XBSN
Learn More →
Q. If 'DOG' is coded as '3-15-7', what is the code for 'CAT'?
A.
3-1-20
B.
2-1-20
C.
4-1-20
D.
5-1-20
Show solution
Solution
Using the same coding, 'C' = 3, 'A' = 1, 'T' = 20 gives '3-1-20'.
Correct Answer:
A
— 3-1-20
Learn More →
Q. If 'HELLO' is coded as '8-5-12-12-15', what is the code for 'WORLD'? (2023)
A.
23-15-18-12-4
B.
23-15-18-14-4
C.
23-15-18-12-5
D.
23-15-18-11-4
Show solution
Solution
W=23, O=15, R=18, L=12, D=4; thus WORLD = 23-15-18-12-4
Correct Answer:
A
— 23-15-18-12-4
Learn More →
Showing 1 to 30 of 93 (4 Pages)
