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Question

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, ?

This question was previously asked in
RRB ALP/Technician 2018 CBT 2 Electronics Mechanic Question Paper (23-Jan-2019) (Shift 1)
The correct answer is
PQ

Series Pattern Analysis

The given series consists of pairs of consecutive letters. We need to find the pattern governing the progression from one pair to the next.

The series is: DE, GH, JK, MN, ?

Letter Progression Analysis

Let's examine the positions of the letters in the alphabet:

  • DE: D is the 4th letter, E is the 5th letter.
  • GH: G is the 7th letter, H is the 8th letter.
  • JK: J is the 10th letter, K is the 11th letter.
  • MN: M is the 13th letter, N is the 14th letter.

First Letter Pattern

The first letters of the pairs are D, G, J, M. Their positions in the alphabet are 4, 7, 10, 13.

The difference between consecutive positions is:

  • \(7 - 4 = 3\)
  • \(10 - 7 = 3\)
  • \(13 - 10 = 3\)

The pattern is an addition of 3 to the position of the first letter. The next position is \(13 + 3 = 16\). The 16th letter is P.

Second Letter Pattern

The second letters of the pairs are E, H, K, N. Their positions in the alphabet are 5, 8, 11, 14.

The difference between consecutive positions is:

  • \(8 - 5 = 3\)
  • \(11 - 8 = 3\)
  • \(14 - 11 = 3\)

The pattern is an addition of 3 to the position of the second letter. The next position is \(14 + 3 = 17\). The 17th letter is Q.

Completing the Series

Combining the next first letter (P) and the next second letter (Q), the missing term in the series is PQ.

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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. Choose the correct option from the given ones to complete the given series.

    XW, TS, PO, LK, ?
  3. 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

  4. 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?

  5. 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.)

  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. 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, ?

  8. 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?

  9. 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?

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

    GJN, ILP, KNR, MPT, ?


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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