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Coding Decoding — Data Sufficiency Questions & Practice

Practise 2 Coding Decoding questions from Data Sufficiency for competitive exams such as UPSC, Banking, SSC and Railway. Read the worked questions below, check every answer with an explanation, and track what you get wrong.

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Practice questions on Coding Decoding — with answers

Try each question first, then open the answer. Explanations are included.

1. What does the code 'X7Y9' represent? I. In this code, letters represent consonants and numbers represent their position doubled. II. The letter X represents the 24th letter of the alphabet.

AStatement I alone is sufficient, but Statement II alone is not sufficient
BStatement II alone is sufficient, but Statement I alone is not sufficient
CBoth statements I and II together are sufficient, but neither alone is sufficient
DBoth statements I and II together are not sufficient

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Answer: D

Neither statement gives enough context about what the code represents in terms of an actual word or number to be decoded, so its meaning cannot be determined even combined.

2. If 'FLOWER' is coded as a certain arrangement, what is the code for 'GARDEN'? I. The coding rule for 'FLOWER' is not disclosed. II. The word 'GARDEN' has 6 letters.

AStatement I alone is sufficient, but Statement II alone is not sufficient
BStatement II alone is sufficient, but Statement I alone is not sufficient
CBoth statements I and II together are sufficient, but neither alone is sufficient
DBoth statements I and II together are not sufficient

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Answer: D

Without knowing the actual coding rule used for 'FLOWER', the code for 'GARDEN' cannot be derived, regardless of knowing the letter count.

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