Coding-Decoding MCQs for Patwari
Practice 20 free Coding-Decoding questions under Mental Ability — Reasoning & Mental Ability.
Strengthen your Coding-Decoding knowledge for Patwari with curated MCQs. Switch between Hindi and English anytime.
Patwari — Mental Ability — Coding-Decoding
20 Questions • Instant results & explanations • Hindi & English
0 / 20
Question 1 of 20
If a cryptographic rule pairs the letter 'D' exclusively with 'W', and the letter 'C' exclusively with 'X', what overarching logical framework is being utilized?
Question 2 of 20
Consider the following statements regarding the shifting of letters (e.g., A -> E): I. It involves replacing a letter with another letter located at a specific forward or backward distance in the alphabet. II. It requires memorizing the word 'Cloud is White'. Which of the statements is correct?
Question 3 of 20
Consider a two-step coding process: First, find the opposite letter, then find its forward numerical position. What is the code for the letter 'C' under this system?
Question 4 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 5 of 20
Match List-I (Alphabetical ranges) with List-II (Numerical positions) for standard forward coding: List-I P. First three letters Q. Letters E, F, G R. Letters U, V, W S. Last three letters List-II 1. 24, 25, 26 2. 5, 6, 7 3. 1, 2, 3 4. 21, 22, 23
Question 6 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 7 of 20
Match List-I (Coding Method) with List-II (Example) correctly: List-I P. Forward Alphabetical Coding Q. Reverse Alphabetical Coding R. Opposite Letter Coding S. Symbol Coding List-II 1. A becomes Z, B becomes Y 2. A=1, B=2, C=3 3. A=$, B=*, R=@ 4. Z=1, Y=2, X=3
Question 8 of 20
If a symbolic coding rule is given as A=S, B=R, and M=%, what does this signify?
Question 9 of 20
Which of the following scenarios perfectly illustrates the process of 'Decoding'?
Question 10 of 20
What is the specialized term for the cognitive and systematic process of converting a seemingly arbitrary numerical sequence like '20-1-14-21' back into the meaningful name 'TANU'?
Question 11 of 20
Match List-I (Words) with List-II (Codes based on standard forward numerical values): List-I P. MAC Q. CAB R. BAD S. DAD List-II 1. 3-1-2 2. 4-1-4 3. 13-1-3 4. 2-1-4
Question 12 of 20
In word substitution, if 'Blue' is coded as 'Black', and 'Black' is coded as 'Green', what is the actual, un-coded color of the sky?
Question 13 of 20
If the word 'RAM' is coded as '18-1-13', what is the specific rule applied in this coding system?
Question 14 of 20
Consider the following statements regarding the prerequisites for a successful encrypted communication: I. The sender must convert meaningful text into an obscure format using a specific predefined rule. II. The receiver must know the exact same predefined rule to accurately retrieve the original information. Which of the statements is/are correct?
Question 15 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 16 of 20
What is the fundamental purpose of the process known as 'coding'?
Question 17 of 20
Consider a word substitution cipher: 'Cloud' is 'White', 'White' is 'Sky', 'Sky' is 'Blue'. If a person wants to look at the atmosphere above the earth during a clear day, what will they look at according to this cipher?
Question 18 of 20
In a word substitution coding system, 'Cloud' is called 'White', 'White' is called 'Sky', 'Sky' is called 'Blue', 'Blue' is called 'Black', and 'Black' is called 'Green'. According to this specific system, what brings rain to the earth?
Question 19 of 20
Which of the following pairs correctly represents the concept of 'Opposite Letters' in coding?
Question 20 of 20