Coding-Decoding MCQs for LDC
Practice 20 free coding-decoding multiple choice questions for LDC exam. Instant answers, explanations in Hindi and English, and topic-wise targeted practice.
Master Coding-Decoding under Mental Ability for LDC with our curated MCQ set. Every question is sourced from real Rajasthan exam patterns and updated regularly. Switch between Hindi and English anytime. Use this daily to strengthen weak areas before the exam.
LDC — Mental Ability — Coding-Decoding
20 Questions • Instant results & explanations • Hindi & English
0 / 20
Question 1 of 20
Consider the coding sequence where A is coded as E, P is coded as T, and C is coded as G. What specific transformation rule is being applied here?
Question 2 of 20
Which of the following scenarios perfectly illustrates the process of 'Decoding'?
Question 3 of 20
If 'RAM' is coded as '@$%' and 'M' is represented by '%', what can be logically deduced about the code for 'MAR'?
Question 4 of 20
If decoding successfully converts '18-1-13' into 'RAM', what defines the relationship between the numbers and the word?
Question 5 of 20
If a code uses the logic of shifting to the '3rd letter ahead' (e.g., A becomes D), what will the letter 'P' become?
Question 6 of 20
Consider the following statements defining cryptographic processes: I. Coding is the deliberate process of transforming a meaningful sentence into a meaningless format using a secret rule. II. Decoding is the deliberate process of extracting a meaningful sentence from a meaningless format using the same secret rule. Which of the statements is correct?
Question 7 of 20
Using the reverse alphabetical numerical coding system where Z=1, Y=2, and X=3, what will be the numerical code for the word 'BAY'?
Question 8 of 20
Assertion (A): The sequence 'Z-1, Y-2, X-3' represents a reverse alphabetical coding rule. Reason (R): Reverse alphabetical coding assigns the highest numerical value (26) to the first letter of the alphabet (A).
Question 9 of 20
Which of the following is NOT a standard method of coding discussed in basic reasoning?
Question 10 of 20
When a person attempts a coding-decoding examination question, why is memorizing an example rule considered an ineffective strategy?
Question 11 of 20
Using a defined word substitution sequence where 'Cloud' is 'White', 'White' is 'Sky', 'Sky' is 'Blue', 'Blue' is 'Black', and 'Black' is 'Green', what is the coded color of the ocean?
Question 12 of 20
What is the primary operational utility of converting a meaningful message into a coded, obscure format?
Question 13 of 20
In a specific coding mechanism, 'TANU' is represented as '20-1-14-21'. Based on this exact logic, how would the word 'MAN' be coded?
Question 14 of 20
Match the letter with its corresponding forward numerical position (List-I to List-II): List-I P. O Q. P R. Q S. R List-II 1. 18 2. 15 3. 17 4. 16
Question 15 of 20
If Z=1, Y=2, X=3, and W=4, what will be the numerical value of the word 'CAB' using this specific logic?
Question 16 of 20
Why is the strategy of memorizing specific coding rules (e.g., A always equals 1) generally considered completely useless by examination experts?
Question 17 of 20
If in a specific language, the sequence of the alphabet is divided into two halves, what is the numerical positional value of the letter 'N' in standard forward coding?
Question 18 of 20
According to the fundamental principles of reasoning, why is an un-coded message vulnerable?
Question 19 of 20
Assertion (A): In coding puzzles, replacing 'A' with 'E' and 'P' with 'T' indicates a coding method based on shifting letters. Reason (R): The letters are being shifted forward by subtracting their positional values.
Question 20 of 20