In each of the following questions, there is a certain relationship between two given letter pairs on one side of (::) and pair is given on another side of (::) where another pair is to be found from the given alternatives, having the same relationship with this pair as the pairs of the given pair bear. Choose the best alternative.
CE : XV :: KG : ?
Show answer & explanation
Correct answer: D
Explanation
Each letter is being replaced by its opposite letter in the alphabet (A - Z, B - Y, C - X, etc.).
The sum of their positional values is 3 + 24 = 27, which is 1 greater than 26 (the total number of letters in the alphabet). This indicates that these are opposite letters in the alphabet.
For CE to XV:

Similarly,
For KG to?

Option (4) is the correct answer.