MCQ
Coding-decoding MCQ - Practice Questions with Answers
Solve 15 Coding-decoding questions for RAS/RPSC preparation.
Practice questions
Q1If 'CEG' is written as 'TSR' and 'FHJ' is written as 'QPO', then 'IKM' is written as:
The coding is based on alphabet positions. In each coded pair, the sums of corresponding letters are fixed: C and T make 23, E and S make 24, and G and R make 25. The same pattern fits FHJ to QPO: F and Q make 23, H and P make 24, and J and O make 25. For IKM, I needs N to make 23, K needs M to make 24, and M needs L to make 25. Therefore the required code is NML; NOL, NOM, and MLN break this position-sum pattern.
Q2If 'PARK' is coded as '5394', 'SHIRT' is coded as '17698' and 'PANDIT' is coded as '532068', then how would 'NISHAR' be coded in that code language?
The code assigns a fixed digit to each letter. From PARK, P = 5, A = 3, R = 9 and K = 4. From SHIRT, S = 1, H = 7, I = 6 and T = 8. From PANDIT, N = 2 and D = 0 are also confirmed, while P, A, I and T repeat consistently. Therefore NISHAR becomes N = 2, I = 6, S = 1, H = 7, A = 3, R = 9, giving 261739. The other numbers break one or more of these fixed letter-digit mappings.
Q3If 'threat' is coded as 289512, then 'BRIDGESTONE' will be coded as:
The code uses the alphabetic position of each letter, reduced to a single digit by adding the digits when needed: t is 20, so 2; h is 8; r is 18, so 9; e is 5; a is 1. That gives threat as 289512. Applying the same rule to BRIDGESTONE gives 2, 9, 9, 4, 7, 5, 1, 2, 6, 5, 5, which forms 29947512655. The other numbers break this pattern at one or more letters.
Q4In a certain code, 'he made good money' is written as '1465', 'he must be good' is written as '9421', 'must save some money' is written as '9876', and 'be good save grace' is written as '2483'. Which of the following is the code for 'some'?
Compare the coded groups by common words. The word 'good' appears in the first, second and fourth statements; the common code there is 4. The word 'he' is then 1, and 'be' is 2. 'Must' is common to the second and third statements, so it is 9. 'Money' is common to the first and third statements, so it is 6. 'Save' is common to the third and fourth statements, so it is 8. In 'must save some money', the remaining code is 7, which belongs to 'some'.
Q5In a certain code language, if "SOUND" is written as "ABCSD" and "MINERAL" is written as "QRSTUVW", then in the same code language, how will "READER" be written?
The code assigns a fixed symbol to each letter from the given examples. From MINERAL written as QRSTUVW, R is coded as U, E as T and A as V. From SOUND written as ABCSD, D is coded as D. Therefore READER becomes R-E-A-D-E-R, that is U-T-V-D-T-U. TUDVUT changes the first and third coded letters, SFBEFS follows a simple next-letter idea that is not the given code, and QDZCDQ uses symbols not supported by the examples.
You've seen 5 of 15 sample questions
Unlimited practice on Coding-decoding comes with the RAS Test Series + Practice pack or Gate Pass.
More questions
6There is a certain relationship between the pair on the left side of ::. Establish the same relationship on the right side of :: and find which option will replace the '?' LANGUAGE : PCRIYCKG :: COMPUTER : ?
7In a certain code, "FROZEN" is written as "OFAPSG". Then how would "MOLTEN" be written in that code?
8If 'MEDICAL' is written as 'DEMILAC' in a certain code language, then how is 'COMPILE' written in that code?
9In a certain code language, if the word 'GOD' is coded as 78 and the word 'GREAT' is coded as 255, then how is the word 'GIFT' coded in that language?
10If CAT = 48, then MOUSE is equal to:
11If TRIPPLE is coded as DMOQHSS in a code language, how is VICTORY coded in that language?
12In a certain code language, 'life is good' is coded as 'ti ve su', 'enjoy life' is coded as 'fs ti', and 'character should be good' is coded as 'nx nu bs su'. What is the code for 'is' in the given code language?
13If B = 25 and SON = 33, then PEN = ?
14In a certain code language, "479" means "fruit is sweet", "248" means "very sweet voice" and "637" means "eat fruit daily". The code for "is" is equal to:
15If in a certain code, O is written as L, A as H, M as I, S as F, N as T, E as S, I as A, P as G, and C as E, then how will COMPANIES be written in that code?