Exercise: Problems on Coding and Decoding

This is the aptitude questions and answers section on 'Coding and Decoding ' with solutions and detailed explanation. Questions on coding and decoding judge the candidate’s ability to decipher or break the code to decipher a message.

Problems on Coding and Decoding : Question 1 :
If in a certain language, MADRAS is coded as NBESBT. Then how is BOMBAY coded in that language?

CPNCBX
CPNCBZ
CPOCBZ
CQOCBZ
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Explanation:
Each letter in the word is moved one step forward to obtain the corresponding letter of the code.
Problems on Coding and Decoding : Question 2 :
In a certain code, TRIPPLE is written as SQHOOKD. How is DISPOSE written in that code?

CHRONRD
DSOESPI
ESJTPTF
ESOPSID
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Explanation:
Each letter in the word is moved one step backward to obtain the corresponding letter of the code.
Problems on Coding and Decoding : Question 3 :
In certain code, TOGETHER is written as RQEGRJCT. In the same code PAROLE will be written as?

NCPQJG
NCQPJG
RCPQJK
RCTQNG
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Explanation:
The letters at odd positions are each moved two steps backward and those at even positions are each moved two steps forward to obtain the corresponding letters of the code.
Problems on Coding and Decoding : Question 4 :
In certain language, CHAMPION is coded as HCMAIPNO, how is NEGATIVE coded in that code ?

ENAGITEV
NEAGVEIT
MGAETVIE
EGAITEVN
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Explanation:
The letters of the word are reversed in order, taking two at a time, to obtain the code.
Problems on Coding and Decoding : Question 5 :
If DELHI is coded as CCIDD, how would you encode BOMBAY?
AJMTVT
AMJXVS
MJXVSU
WXYZAX
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Explanation:
The first, second, third,……. letters of the word are respectively moved one, two, three,…………steps backward to obtain the corresponding letters of the code.