UPSC Prelims 1998·GS1·science-and-technology·science and technology

Which one of the following satisfies the relationship D d a: a D D:: R r b: ?

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Last updated 23 May 2026, 3:31 pm IST
  1. AD D A
  2. BR R R
  3. Cb R RCorrect
  4. DB B r

Explanation

To solve this analogy, observe the pattern in the first pair D d a to a D D. First, the third letter of the group moves to the first position. In the first pair, small a moves to the front. In the second pair, small b must move to the front. Second, the first letter of the group is repeated twice in its capital form to fill the remaining positions. In the first pair, capital D becomes D D. In the second pair, capital R becomes R R. Applying this logic to R r b, the small b moves to the front, followed by two capital Rs. This results in b R R. Therefore, option C is correct.
science-and-technology: Which one of the following satisfies the relationship D d a: a D D:: R r b: ?
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