Which of the following letter-clusters should replace # and % so that the pattern and relationship followed between the letter-cluster pair on the left side of :: is the same as that on the right side of :: ?
# : RND :: QRX : %

Given : # : RND :: QRX : %

Logic: First letter: +2, Second letter: +1, Third letter: +2

Option (d) # = PMB, % = SSZ

PMB → RND

P + 2 → R, M + 1 → N, B + 2 → D

QRX → SSZ

Q + 2 → S, R + 1 → S, X + 2 → Z

Thus, correct option is (d).