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Which of the following letter-number clusters will replace the question mark (?) in the given series to make it logically complete? NTZ 14, KQW 23, HNT 32, EKQ 41, BHN 50, ?
YEK 58
ZEK 59
YKK 59
YEK 59
YEK 59
Observe the first letter shifts by -3, the second letter by -3, the third letter by -3, and the number by +9.
Observe the first letter shifts by -3, the second letter by -3, the third letter by -3, and the number by +9.
Analyze Letter Transitions
Each of the three letters in the clusters follows a consistent shift of -3 in the alphabetical position: N-K-H-E-B тЖТ Y; T-Q-N-K-H тЖТ E; Z-W-T-Q-N тЖТ K.
Analyze Numerical Progression
The numbers follow an arithmetic progression with a common difference of +9: 14, 23, 32, 41, 50. Adding 9 to 50 gives 59.
Combine Results
Combining the transformed letters (Y, E, K) and the final calculated number (59) yields the cluster YEK 59.
A: Incorrect because the number 58 is mathematically wrong (+8 instead of +9). B: Incorrect because the first letter Z is wrong (-2 instead of -3). C: Incorrect because the second letter K is wrong (-0 instead of -3).
D is correct because the series follows a consistent pattern of shifting each letter by -3 and adding +9 to each preceding number.
In alphanumeric series, always split the pattern into separate components (letters vs numbers) and solve them independently before verifying the combination.
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