Alphabet Series — Complete the Analogy WFB, TGD, QHG, ? → Choose the next three-letter term.

Introduction / Context:Alphabet series problems often apply independent patterns to each character position. Spotting arithmetic shifts on alphabet indices (A=1 to Z=26) unlocks the next term efficiently.

Given Data / Assumptions:

• Given terms: WFB, TGD, QHG, ?
• We assume consistent letter-wise transformations.

Concept / Approach:Analyze each letter position separately and track the index changes.

Step-by-Step Solution:First letters: W(23) → T(20) → Q(17): −3 each step → next = 17 − 3 = 14 → NSecond letters: F(6) → G(7) → H(8): +1 each step → next = 8 + 1 = 9 → IThird letters: B(2) → D(4) → G(7): +2, +3 → next increment +4 → 7 + 4 = 11 → KTherefore, the next term is NIK.

Verification / Alternative check:The progression by −3 (first), +1 (second), and +2,+3,+4 (third) is internally consistent and yields a unique result.

Why Other Options Are Wrong:

• NIJ, NJK, OIK, PJK: Each deviates from at least one positional rule (e.g., third-letter increment of +4 or the first-letter −3 step).

Common Pitfalls:Treating the triplet as a single object instead of analyzing positions independently. Always break it down to letter-wise arithmetic on indices.

Final Answer:NIK