UPSC Prelims 2020·CSAT·Logical Reasoning·Coding Decoding

The letters from A to Z are numbered from 1 to 26 respectively. If GHI = 1578 and DEF = 912, then what is ABC equal to?

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Last updated 23 May 2026, 3:31 pm IST
  1. A492
  2. B468
  3. C262
  4. D246Correct

Explanation

To find the logic, first identify the numerical position of each letter in the alphabet. For GHI: G is 7, H is 8, and I is 9. If you arrange these digits as the number 789 and multiply by 2, you get 1578. For DEF: D is 4, E is 5, and F is 6. If you arrange these digits as the number 456 and multiply by 2, you get 912. Following this same pattern for ABC: A is 1, B is 2, and C is 3. Arrange these digits to get 123. Multiply 123 by 2, which equals 246. Therefore, ABC is equal to 246. The correct option is D.
Logical Reasoning: The letters from A to Z are numbered from 1 to 26 respectively. If GHI = 1578 and DEF = 912, then what is ABC equal to?
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