UPPSC PCS - 2015
If ENGLAND is coded as 1234526 and FRANCE is written as 785291. How will GREECE be written In this coding system?
Year Asked: 2015
Correct Answer
A. 381191
Detailed Explanation
The correct answer is A.
This is a letter-to-digit substitution code, so each letter has one fixed digit throughout. From ENGLAND (1234526) we get E=1, N=2, G=3, L=4, A=5, D=6. FRANCE (785291) then fits the same mapping: F=7, R=8, A=5, N=2, C=9, E=1. Every letter shared by the two words gets the same digit, which confirms the mapping.
Now decode GREECE letter by letter: G=3, R=8, E=1, E=1, C=9, E=1. The code is 381191.
The other options break the fixed mapping. B (381911) gives the two E's different digits (1 and 9). C (394132) gives R the digit 9 and E the digit 4 in the third position. D (562134) gives G the digit 5, while G is 3 in ENGLAND.
Core concept: coding-decoding with a fixed letter-digit cipher. Build the mapping from one example, check it against a second, then apply it consistently. This habit carries over to reasoning questions in Prelims and to analytical answers in GS papers.
Trap: candidates read the code by position without checking repeated letters. The repeated E's in GREECE are the whole point of the question.
This question appeared in UPPCS 2015 GS Paper 2.
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