Which of the following letter-number clusters will replace the question mark (?) in the given series to make it logically complete? KDW 25, NGZ 35, QJC 55, TMF 95, WPI 175, ?
ZSL 335
In a letter-number cluster series, the letter block and the number block usually follow independent rules, so analyse them separately.
Letter pattern. Track each of the three letter positions across the terms KDW, NGZ, QJC, TMF, WPI:
- First letters: K → N → Q → T → W, a constant jump of +3. Continuing, W + 3 = Z.
- Second letters: D → G → J → M → P, again +3 each time. So P + 3 = S.
- Third letters: W → Z → C → F → I (the alphabet wraps past Z), still +3 each step. So I + 3 = L.
The letter block is therefore ZSL.
Number pattern. The numbers are 25, 35, 55, 95, 175. Look at the successive differences: 35 − 25 = 10, 55 − 35 = 20, 95 − 55 = 40, 175 − 95 = 80. Each gap doubles (10, 20, 40, 80), so the next gap is 160, giving 175 + 160 = 335.
Combining both parts gives ZSL 335. The options ending in different letters such as ZML or ZSG break the uniform +3 shift in the second or third position, so they cannot be right. The correct answer is ZSL 335.
Similar Questions
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A25 : Y1 :: L14 : ? Select the set that can replace the question marks (?) in the following series.
$\displaystyle \frac{\text{D}}{23} \; \frac{20}{\text{G}} \; \frac{\text{J}}{17} \; \frac{14}{\text{M}} \; \frac{\text{P}}{11} \; \frac{\text{?}}{\text{?}}$
- Select the option that can replace the question mark (?) in the given series.
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B3, D10, F17, H24, ? - Select the alphanumeric-cluster that can replace the question mark (?) in the following series.
B4D, C9I, D16P, ? - Select the alphanumeric-cluster that can replace the question mark (?) in the following series.
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HYP 8, LCT 15, PGX 29, TKB 57, XOF 113, ? - Study the given series carefully and select the option that will come next (in place of the question marks).
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Important Questions from Letter and Number Based
Select the related number from the given alternatives that will complete the series:
Y 2 : 4 : : V 2 : ?Select the related number from the given alternatives:
F : 216 : : L : ?In the following question, select the related number from the given alternatives.
52 : 57 ∷ 46 : ?Select the option in which the numbers are related in the same way as are the numbers of the following set.
(4, 25, 105)
Select the option that is related to the third term in the same way as the second term is related to the first term.
267 : 5 :: 549 : ?
