Question 1

In a code language, vowels are replaced by the next vowel in sequence (A→E, E→I, I→O, O→U, U→A), and consonants remain unchanged. What is the code for the word 'BRAIN'?

Accepted Answer

Apply the vowel-shift rule: B stays B, R stays R, A→E, I→O, N stays N. The coded word is BREON.

Question 2

In a certain code, each letter is replaced by the letter that comes 3 positions after it in the English alphabet. For example, A is coded as D, B is coded as E, and so on. If the word 'HELLO' is coded using this rule, what will be the code?

Accepted Answer

Apply the +3 letter shift rule to each letter: H→K, E→H, L→O, L→O, O→R. The coded word is KHOOR.

Question 3

In a certain code, each letter's position in the alphabet is replaced by its corresponding number (A=1, B=2, C=3, ... Z=26). What is the numeric code for 'CAT'?

Accepted Answer

Convert each letter to its position: C=3, A=1, T=20. The numeric code is 3-1-20.

Question 4

In a certain code, the position of letters in a word is reversed, and then each letter is replaced by the letter 1 position before it in the alphabet (B→A, C→B, D→C, etc.). What is the code for 'JUMP'?

Accepted Answer

Step 1: Reverse 'JUMP' → 'PMUJ'. Step 2: Apply -1 shift to each letter: P→O, M→L, U→T, J→I. The coded word is OLTI.

Question 5

In a certain coding system, each letter is replaced by the letter that comes 3 positions ahead of it in the English alphabet. For example, A is coded as D, B is coded as E, and so on. If a letter reaches beyond Z, it wraps around to the beginning (so X→A, Y→B, Z→C). Using this rule, what is the code for the word 'PRINT'?

Accepted Answer

This is a letter-shift coding question where each letter shifts forward by 3 positions with wraparound. P→S, R→U, I→L, N→Q, T→W. Therefore PRINT is coded as SULQW.

Question 6

In a certain coding system, each letter is replaced by the letter that comes 3 positions ahead in the alphabet (with Z wrapping to C). Using this rule, what is the code for the word 'BANK'?

Accepted Answer

Apply the +3 letter shift rule to each letter: B→E, A→D, N→Q, K→N. The coded word is EDQN.

Question 7

In a code, the word 'LOGIC' is written as '12-15-7-9-3' where each letter is replaced by its position number in the alphabet. If 'REASON' is coded using the same rule, what is its code?

Accepted Answer

Find the alphabetic position of each letter: R=18, E=5, A=1, S=19, O=15, N=14. The code is 18-5-1-19-15-14.

Question 8

In a certain code, vowels are replaced by the next vowel in sequence (A→E, E→I, I→O, O→U, U→A), and consonants remain unchanged. What is the code for 'FRIEND'?

Accepted Answer

F remains F (consonant). R remains R (consonant). I→O (vowel shift). E→I (vowel shift). N remains N (consonant). D remains D (consonant). The code is 'FROIND'.

Question 9

In a code, each letter is replaced by a symbol as follows: A=@, E=%, I=&, O=*, U=#, and all consonants are replaced by their position number in the alphabet. What is the code for 'COMPUTER'?

Accepted Answer

C=3, O=*, M=13, P=16, U=#, T=20, E=%, R=18. The code is '3*13-16-#-20-%18' (or written as: 3*1316#20%18).

Question 10

In a code, the word 'SILENT' becomes 'TKNFOV' where each letter is replaced by the letter 2 positions ahead, except the last letter which is replaced by the letter 3 positions ahead. Using this rule, what is the code for 'MARKET'?

Accepted Answer

Apply +2 shift to M, A, R, K, E (first 5 letters): M→O, A→C, R→T, K→M, E→G. Apply +3 shift to T (last letter): T→W. The code is 'OCTMGW'.

Question 11

In a certain coding system, each letter is replaced by the letter that comes 3 positions after it in the English alphabet, and the position wraps around (Z wraps to C). Additionally, vowels are replaced by the number corresponding to their position in the alphabet (A=1, E=5, I=9, O=15, U=21). Using this code, what is the encoding of the word 'PHONE'?

Accepted Answer

This question tests the ability to apply a dual-rule coding system: consonant shift and vowel-to-number substitution. Students must correctly apply the +3 shift to consonants while remembering that vowels convert to their alphabetical position numbers, not shifted letters.

Question 12

In a mirror-code system, letters are first converted to numbers (A=1, B=2, ..., Z=26), then the entire sequence is mirrored (reversed), and finally each number is replaced by its complement to 27 (i.e., 27 minus the number). For the word 'LOGIC', what is the final code?

Accepted Answer

This question tests sequential application of three transformations: substitution, reversal, and complement calculation.

Question 13

In a hybrid code, consonants are shifted forward by 3 positions in the alphabet, vowels are replaced by their reverse position (A=26, E=22, I=18, O=8, U=4), and then the entire result is written in reverse order. What is the code for 'STRENGTH'?

Accepted Answer

This question combines selective letter transformation (consonant shift vs. vowel substitution) with sequence reversal.

Question 14

A code uses the following rule: Replace each letter with the number of letters that come AFTER it in the alphabet (e.g., A=25 because 25 letters follow A; Z=0 because no letters follow Z). Then, sum all numbers and divide by the count of letters. Round down to the nearest integer. What is the code for 'BRAIN'?

Accepted Answer

This question tests reverse-position substitution, arithmetic summation, and division with rounding.

Question 15

In a coding system, each letter is replaced by the number representing its position in the alphabet, then each number is reversed (written backwards). Finally, all reversed numbers are added together. For example, if the word is 'CAB', then C=3, A=1, B=2. After reversing: 3→3, 1→1, 2→2. Sum = 3+1+2 = 6. Using this rule, what is the code for the word 'PRIZE'?

Accepted Answer

This question tests the ability to apply a multi-step encoding rule involving position substitution, digit reversal, and summation.

SBI Clerk Coding Decoding

Coding Decoding— Rules & Concept

Key Points to Remember

Exam-Specific Tips

Coding Decoding — Practice Questions

60-Second Revision — Coding Decoding