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Which of the following options should come in place of the question mark (?) in the given series based on the English alphabetical order? ZSN, QJE, HAV, YRM,?
PJC
PJD
PID
PIC
PID
Look at each column separately: the first letter follows a Z → Q (-9) → H (-9) → Y (-9) pattern; the second letter cycles through S → J (-9) → A (-9) → R (-9) pattern; the third letter follows N → E (-9) → V (-9) → M (-9) pattern.
Look at each column separately: the first letter follows a Z → Q (-9) → H (-9) → Y (-9) pattern; the second letter cycles through S → J (-9) → A (-9) → R (-9) pattern; the third letter follows N → E (-9) → V (-9) → M (-9) pattern.
Analyze 1st Letter Pattern
Z (26) to Q (17) is -9. Q (17) to H (8) is -9. H (8, or 34) to Y (25) is -9. Y (25) to (?) is 25 - 9 = 16. The 16th letter is P.
Analyze 2nd Letter Pattern
S (19) to J (10) is -9. J (10) to A (1, or 27) is -9. A (27) to R (18) is -9. R (18) to (?) is 18 - 9 = 9. The 9th letter is I.
Analyze 3rd Letter Pattern
N (14) to E (5) is -9. E (5, or 31) to V (22) is -9. V (22) to M (13) is -9. M (13) to (?) is 13 - 9 = 4. The 4th letter is D.
A: Starts with PJC which fails the 2nd and 3rd letter logic. B: Starts with PJD which fails the 3rd letter logic (D is correct, but PJD does not match the -9 cycle for J). D: Starts with PIC which fails the 2nd letter logic.
C is correct because applying the uniform -9 shift to each letter of the previous term (YRM) yields 25-9=16(P), 18-9=9(I), and 13-9=4(D), resulting in PID.
When encountering 3-letter groups, always solve one column at a time; often the shift value for each column is identical across the entire series.
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