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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? 

QOI 5, OMG 10, MKE 15, KIC 20, ?

The correct answer is

IGA 25

To solve this problem, we must find the logic behind the given series of letter-number clusters and complete it by identifying the appropriate letter-number cluster to replace the question mark.

The series given is: QOI 5, OMG 10, MKE 15, KIC 20, ?

Let's break down each component of the series:

  1. Pattern Analysis: We observe a pattern in the letters and the increment in numbers.
  2. Letters:
    • First letters: Q, O, M, K. The sequence suggests each letter decreases by 2 in the English alphabet.
      • Q (17) → O (15) → M (13) → K (11)
    • Second letters: O, M, K, I. Similarly, this sequence decreases by 2 as well.
      • O (15) → M (13) → K (11) → I (9)
    • Third letters: I, G, E, C. This sequence decreases by 2.
      • I (9) → G (7) → E (5) → C (3)
  3. Numbers:
    • The numbers following the letter groups are: 5, 10, 15, 20, which increase by 5 each time. This suggests an arithmetic progression with a common difference of 5.
    • Therefore, the next number should be 25.

Applying the pattern:

  • For the next letter cluster, decrease each letter by 2:
    • Previous first letter K (11) → Next is I (9).
    • Previous second letter I (9) → Next is G (7).
    • Previous third letter C (3) → Next is A (1).

Thus, the correct letter-number cluster is "IGA 25".

Conclusion:

The complete logically structured sequence is: QOI 5, OMG 10, MKE 15, KIC 20, and finally, IGA 25. Therefore, the correct answer is IGA 25.

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