यदि एक निश्चित कोड में, ‘ABCD’ को 24 के रूप में लिखा जाता है तथा ‘EFGH’ को 1680 के रूप में लिखा जाता है, तो इस कोड में ‘IJKL’ को कैसे लिखा जाता है?
Read this question in English
If in a certain code, ‘ABCD’ is written as 24 and ‘EFGH’ is written as 1680, then how is ‘IJKL’ written in that code?
(a) 11880 · (b) 11240 · (c) 7920 · (d) 5940
उत्तर और व्याख्या · explanation in English
Answer: (a) 11880
Each letter stands for its position in the alphabet and the code is the product: 1 × 2 × 3 × 4 = 24 and 5 × 6 × 7 × 8 = 1680. So IJKL = 9 × 10 × 11 × 12 = 11880.
- ABCD: 1 × 2 × 3 × 4 = 24, which matches.
- EFGH: 5 × 6 × 7 × 8 = 1680, which matches.
- IJKL: 9 × 10 × 11 × 12 = 90 × 132 = 11880.
Remember · When letters become numbers, test alphabet positions with sum and product first.
Question and answer: UPSC's official GS Paper II (2024, Series A) — paper ↗ · answer key ↗. Explanation: Minimalist IAS, checked 30 Sept 2026 (how we verify). ·