1) C4X, F9U, I16R, ? A) K25P B) L25P C) L25O D) L27P Answer: Option CExplanation:1st letter : $C+3\rightarrow F, F+3\rightarrow I, I+3\rightarrow L$ Numbers : 4(22) → 9(32) → 16(42) → 25(52) 3rd letter : $X-3\rightarrow U, U-3\rightarrow R, R-3\rightarrow O$ Hence the answer is (c).