Alphabet series – fill in the blanks (identify the four missing letters): Z, ?, T, ?, N, ?, H, ?, B

Introduction / Context:
This verbal reasoning problem asks you to complete an alphabet sequence with multiple blanks. Such questions test recognition of parallel sub-patterns, usually formed by alternating terms or by separating the sequence into two intertwined progressions.

Given Data / Assumptions:

• Sequence shown: Z, ?, T, ?, N, ?, H, ?, B.
• Exactly four letters are missing.
• English alphabet order is used; Z is position 26, A is position 1.
• Assume a single consistent rule governs the whole series.

Concept / Approach:
The visible letters at odd positions are Z, T, N, H, B. Converting to positions gives 26, 20, 14, 8, 2. Differences between successive odd terms are −6 each time. Therefore, one subsequence is a steady step of −6. The missing letters must form the second interleaved subsequence that follows the same consistent stepping rule (most likely also a constant step).

Step-by-Step Solution:
Odd-position terms: Z(26) → T(20) → N(14) → H(8) → B(2); step each time = −6.The four blanks occur at positions 2, 4, 6, 8 and therefore make a second independent subsequence.To keep symmetry, take the first missing value as 26 − 3 = 23 (i.e., W), then continue with −6 steps: 23 → 17 (Q) → 11 (K) → 5 (E).Thus the missing letters are W, Q, K, E.

Verification / Alternative check:
Write the complete sequence with both intertwined lines: (Z, W), (T, Q), (N, K), (H, E), B. Each subsequence descends by 6 (26→20→14→8→2 and 23→17→11→5), confirming a consistent rule for both tracks.

Why Other Options Are Wrong:

• Answers starting with X or using R instead of Q break the constant −6 stepping for the interleaved track.
• Any set that does not read W→Q→K→E by −6 each time fails the symmetry with the visible odd terms.

Common Pitfalls:

• Trying to force one linear rule across all nine letters rather than recognizing two interleaved sequences.
• Counting letter gaps without converting to numeric positions first, which can hide the constant difference.

Final Answer:
W, Q, K, E