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Question

Select the alphanumeric-cluster from among the given options that can replace the question mark (?) in the given series.
G7H, I9J, K11L, ?

This question was previously asked in
RRB NTPC 2019 CBT 1 Question Paper (8-Mar-2021) (Shift 2)
The correct answer is
M13N

Solving the Alphanumeric Series G7H, I9J, K11L

We need to identify the pattern in the series G7H, I9J, K11L and find the next term.

Analyzing the Series Pattern

The series consists of three parts: a starting letter, a number, and an ending letter.

  • First Letter: The sequence is G, I, K. These letters are spaced two positions apart in the alphabet (G, skip H, I; I, skip J, K). The next letter follows this pattern: K, skip L, M.
  • Number: The sequence is 7, 9, 11. This is an arithmetic sequence where 2 is added to each term ($7, 7+2=9, 9+2=11$). The next term is $11 + 2 = 13$.
  • Second Letter: The sequence is H, J, L. These letters are also spaced two positions apart in the alphabet (H, skip I, J; J, skip K, L). The next letter follows this pattern: L, skip M, N.

Determining the Next Term

Combining the identified patterns:

  • The next first letter is M.
  • The next number is 13.
  • The next second letter is N.

Therefore, the complete next term in the series is M13N.

This corresponds to Option C.

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Similar Questions

  1. A series is given with one term missing. Select the correct alternative from the given options that will complete the series. 

    EF27, GI34, IL41, KO48, ?

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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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