यदि MUMBAI के लिए कूट है LSJXVC, तो DELHI के लिए कूट है
Read this question in English
If LSJXVC is the code for MUMBAI, the code for DELHI is
(a) CCIDD · (b) CDKGH · (c) CCJFG · (d) CCIFE
उत्तर और व्याख्या · explanation in English
Answer: (a) CCIDD
Each letter of MUMBAI is moved back by 1, 2, 3, 4, 5 and 6 places in turn, wrapping from A round to Z. Moving the letters of DELHI back by 1 to 5 gives CCIDD.
- M − 1 = L, U − 2 = S, M − 3 = J, B − 4 = X (B → A → Z → Y → X), A − 5 = V, I − 6 = C.
- DELHI: D − 1 = C, E − 2 = C, L − 3 = I, H − 4 = D, I − 5 = D.
- Code: CCIDD.
- Check: (d) CCIFE agrees in the first three letters but fails at H − 4 = D.
Remember · In letter codes, write the shift for each position; a growing shift (−1, −2, −3 …) is common, and letters wrap from A to Z.
Question and answer: UPSC's official GS Paper II (2018, Series A) — paper ↗ · answer key ↗. Explanation: Minimalist IAS, checked 30 Sept 2026 (how we verify). ·