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Question

Which of the following letter-number clusters will replace the question mark (?) in the given series to make it logically complete? 

GXM 5, JVN 11, MTO 24, PRP 51, ?

This question was previously asked in
RRB ALP 2025 CBT 2 Wiremen Question Paper (28-Jul-2026) (Shift 2)
The correct answer is

SPQ 106

The given series of letter-number clusters is: GXM 5, JVN 11, MTO 24, PRP 51, ?. We need to find the pattern in the series to replace the question mark (?) with the correct option.

Let's analyze each part (letters and number) in the given series:

  1. Each cluster consists of three letters and a number.
  2. We notice the letters in each cluster change and follow a pattern.
  3. The numbers 5, 11, 24, and 51 appear to follow a numerical progression.

Firstly, observe the letters:

  • The first letter sequence: G, J, M, P. These letters have ASCII values of 71, 74, 77, and 80 respectively, indicating a pattern with a difference of 3 for the first letter.
  • The second letter sequence: X, V, T, R. These letters have ASCII values of 88, 86, 84, and 82 respectively, indicating a decrease by 2.
  • The third letter sequence: M, N, O, P. These letters increase sequentially by 1 in the alphabet.

Now, consider the numbers:

  • The numbers are 5, 11, 24, and 51. To find the pattern, look at the differences:
    • 11 - 5 = 6
    • 24 - 11 = 13
    • 51 - 24 = 27
  • Notice that these differences approximately follow a pattern related to powers of 2: 6 ≈ 21 x 2, 13 ≈ 22 x 2 + 1, 27 = 23 x 3 + 3.

To find the next value in the series, it's likely the difference is approximately 55 or 54 from 51, suggesting the factor as (24 x 2) ± 1.

Therefore, adding 55 to 51 gives us 106.

Thus, the next letter-number cluster is SPQ 106, following the letter pattern and the discussed number pattern.

Conclusion: The correct answer is SPQ 106.

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Similar Questions

  1. How many such pairs of letters are there in the word JOURNEY (in forward direction), each of which has as many letter in the same sequence between them in the word as in the English alphabet?

  2. A series is given, with one term missing. Choose the correct alternative from the given ones that will complete the series.

    DE, GH, JK, MN, ?
  3. Choose the correct option from the given ones to complete the given series.

    XW, TS, PO, LK, ?
  4. Select the pair which follows the same pattern as that followed by the two set of pairs given below. Both pairs follow the same pattern.

    GTC : KWE
    WFK : AIM

  5. DGEH is related to ILJM in a certain way based on the English alphabetical order. In the same way, GJHK is related to LOMP. To which of the following options is PSQT related, following the same logic?

  6. Based on the English alphabetical order, three of the following four letter-cluster pairs are alike in a certain way and thus form a group. Which pair does not belong to that group?

    (Note: The odd one out is not based on the number of consonants/vowels or their position in the letter-cluster.)

  7. Based on the English alphabetical order, three of the following four letter-cluster pairs are alike in a certain way and thus form a group. Which pair does not belong to that group?

    (Note: The odd one out is not based on the number of consonants/vowels or their position in the letter-cluster.)

  8. Which of the following options should come in place of the question mark (?) in the given series based on the English alphabetical order?

    BFW, DIS, FLO, HOK, ?

  9. If each vowel in the word PLANTED is changed to the letter following it in the English alphabetical order and each consonant is changed to the letter preceding it in the English alphabetical order, then which letter will be in the third position from the left in the new group of letters thus formed?

  10. If each vowel in the word PAINTED is changed to the letter following it in the English alphabetical order and each consonant is changed to the letter preceding it in the English alphabetical order, then which letter will be in the third position from the left in the new group of letters thus formed?


Important Questions from Alpha-numeric series

  1. Consider the following sequence of numbers: 5 1 4 7 3 9 8 5 7 2 6 3 1 5 8 6 3 8 5 2 2 4 3 4 9 6 How many odd numbers are followed by the odd number in the above sequence?

  2. Which one set of letters when sequentially placed at the gaps in the given letter series shall complete it? _sr_tr_srs_r_srst_

  3. Find the missing number in the following series: 43, 172, 86, 344, ?

  4. Select the missing numbers from the given alternatives

  5. How many such pairs of letters are there in the word JOURNEY (in forward direction), each of which has as many letter in the same sequence between them in the word as in the English alphabet?

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