In a certain coding method, the word QUESTION is encoded as DOMESTIC. In this…
2014
In a certain coding method, the word QUESTION is encoded as DOMESTIC. In this coding, what is the code word for RESPONSE?
Answer: C. OMESICEM — ConceptIn a fixed substitution code, each source letter always maps to the same coded letter. When some mappings are unknown, use only the established letter…
- A.
OMESUCEM
- B.
OMESICSM
- C.
OMESICEM
- D.
OMESISCM
Attempted by 4 students.
Show answer & explanation
Correct answer: C
Concept
In a fixed substitution code, each source letter always maps to the same coded letter.
When some mappings are unknown, use only the established letter correspondences and compare the resulting pattern with the answer choices.
Application
Align QUESTION with DOMESTIC. The useful correspondences are E → M, S → E, O → I, and N → C.
Apply those known correspondences to RESPONSE: R → ?, E → M, S → E, P → ?, O → I, N → C, S → E, E → M. This gives the pattern ?ME?ICEM.
Compare that pattern with the choices. Only OMESICEM has M, E, I, C, E, M in all the positions fixed by the known mappings.
Cross-check
Reading OMESICEM at the positions of E, S, O, N, S, E gives M, E, I, C, E, M, exactly as the example requires.
Result
Therefore, the code word is OMESICEM.