In a certain code language, ‘INDORE’ is written as ‘KPFQTG’. How is ‘CHENNAI’…

Concept

In letter-shift coding, compare each input letter with the output letter at the same position and express the change as an alphabetic offset. If the same offset repeats throughout the example, apply it independently to every letter of the new word.

Application

1. Compare INDORE with KPFQTG: I→K, N→P, D→F, O→Q, R→T and E→G. Every letter moves two places forward in the alphabet.

2. Apply the same shift to CHENNAI: C→E, H→J, E→G, N→P, N→P, A→C and I→K.

3. Join the shifted letters in order to obtain EJGPPCK.

Cross-check

Shifting each letter of EJGPPCK two places backward gives CHENNAI, which confirms the rule. Therefore, CHENNAI is coded as EJGPPCK.