All Exams Test series for 1 year @ ₹349 only
Question

Four letter-pairs have been given, out of which three are alike in some manner and one is different. Select the odd one.

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

Identifying the Odd Letter Pair

The question asks to identify the letter pair that does not follow the same pattern as the others. We need to find the relationship between the letters in each pair.

Analyzing Alphabetical Differences

We can determine the relationship by looking at the difference in the alphabetical positions of the letters in each pair. Let's assign numerical values (A=1, B=2, ..., Z=26) and calculate the forward difference, considering wrap-around from Z to A.

  • Pair 1: B-F
    • B is the 2nd letter.
    • F is the 6th letter.
    • Difference: $6 - 2 = 4$.
  • Pair 2: Y-C
    • Y is the 25th letter.
    • C is the 3rd letter.
    • Difference (considering wrap-around Z -> A): $(26 - 25) + 3 = 1 + 3 = 4$.
  • Pair 3: Z-F
    • Z is the 26th letter.
    • F is the 6th letter.
    • Difference (considering wrap-around Z -> A): $(26 - 26) + 6 = 0 + 6 = 6$.
  • Pair 4: M-Q
    • M is the 13th letter.
    • Q is the 17th letter.
    • Difference: $17 - 13 = 4$.

Conclusion

Three pairs (B-F, Y-C, M-Q) show a forward alphabetical difference of 4 positions. The pair Z-F shows a forward alphabetical difference of 6 positions. Therefore, Z-F is the odd one out.

Was this answer helpful?

Similar Questions

  1. Which of the following letter-number clusters will replace the question mark (?) in the given series to make it logically complete?
    GBD 14, KFH 17, OJL 20, SNP 23, ?
  2. Which of the following letter-number clusters will replace the question mark (?) in the given series to make it logically complete?
    KFU-15 IIQ-22 GLM-31 EOI-42 ?
  3. Which of the following letter-number clusters will replace the question mark (?) in the given series to make it logically complete?

    HYP 8, LCT 15, PGX 29, TKB 57, XOF 113, ?
  4. Which option will replace the question mark in the below series?
    A25 : Y1 :: L14 : ?
  5. Select the option that can replace the question mark (?) in the given series.

    P3L, N5N, L7P, J11R, H13T, ?
  6. Select the set that can replace the question marks (?) in the following series.

     $\displaystyle \frac{\text{D}}{23} \; \frac{20}{\text{G}} \; \frac{\text{J}}{17} \; \frac{14}{\text{M}} \; \frac{\text{P}}{11} \; \frac{\text{?}}{\text{?}}$

  7. Select the term that can replace the question mark (?) in the following series.

    B3, D10, F17, H24, ?
  8. Select the alphanumeric-cluster that can replace the question mark (?) in the following series.

    B4D, C9I, D16P, ?
  9. Select the alphanumeric-cluster that can replace the question mark (?) in the following series.

    A9B, C49D, E121F, ?
  10. Study the given series carefully and select the option that will come next (in place of the question marks).

    $\frac{\text{C}}{29} \frac{25}{\text{F}} \frac{\text{I}}{21} \frac{17}{\text{L}} \frac{\text{O}}{13} \frac{\text{?}}{\text{?}}$

Important Questions from Letter and Number Based

  1. Select the option in which the numbers are related in the same way as are the numbers of the following set.

    (4, 8, 16)

  2. Select the option that is related to the third number in the same way as the second number is related to the first number.

    23 : 441 : : 28 : ?

  3. Select the option that is related to the third number in the same way as the second number is related to the first number and the sixth number is related to the fifth number.

    12 : 72 ∷ 18 : ? ∷22 : 242
  4. Select the option that is related to the third number in the same way as the second number is related to the first number.

    7 : 56 :: 11 : ?

  5. Select the option in which the numbers are related in the same way as are the numbers of the following set.

    (12, 60, 84)

Need Expert Advice?
Upcoming Exams
RRB ALP
July 28, 2026
RRB Group D
August 03, 2026
Test Series
RRB NTPC img
Railways
RRB NTPC Under Graduate 2026 New Mock Test Series
1459 Tests 2 Tests Free
213 Attempts
4.3(512)
English, Hindi, Telugu +7 More

Start Your Preparation with Prepp Mobile App

Download the app from Google Play & App Store
Download the app from Google Play & App Store
Prepp Mobile App