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Question

In the following question, select the related letter pair from the given alternatives.

APX : BQY : : ? : ?

The correct answer is

CSN : DTO

Solving Letter Analogy Questions

Letter analogy questions test your ability to identify the relationship between a given pair of letters or letter groups and apply the same relationship to find the missing pair. In this question, we are given the pair APX : BQY and need to find a pair from the options that follows the same rule.

Understanding the Pattern in APX : BQY

Let's look at the position of each letter in the alphabet and how it changes from the first group (APX) to the second group (BQY).

  • The first letter changes from A to B. A is the 1st letter, B is the 2nd. This is a shift of \(\text{+1}\).
  • The second letter changes from P to Q. P is the 16th letter, Q is the 17th. This is a shift of \(\text{+1}\).
  • The third letter changes from X to Y. X is the 24th letter, Y is the 25th. This is a shift of \(\text{+1}\).

So, the pattern is that each corresponding letter in the second group is one position forward in the alphabet compared to the first group. The rule is simply a \(\text{+1}\) shift for each letter.

Analyzing the Options

Now, let's apply this \(\text{+1}\) shift rule to the first part of each option pair and see if we get the second part.

Option 1: JRA : KTB

  • J to K: J is 10th, K is 11th. Shift is \(\text{+1}\). Correct.
  • R to T: R is 18th, T is 20th. Shift is \(\text{+2}\). Incorrect.

This option does not follow the \(\text{+1}\) pattern for all letters.

Option 2: JLM : KMP

  • J to K: J is 10th, K is 11th. Shift is \(\text{+1}\). Correct.
  • L to M: L is 12th, M is 13th. Shift is \(\text{+1}\). Correct.
  • M to P: M is 13th, P is 16th. Shift is \(\text{+3}\). Incorrect.

This option does not follow the \(\text{+1}\) pattern for all letters.

Option 3: CSN : DTO

  • C to D: C is 3rd, D is 4th. Shift is \(\text{+1}\). Correct.
  • S to T: S is 19th, T is 20th. Shift is \(\text{+1}\). Correct.
  • N to O: N is 14th, O is 15th. Shift is \(\text{+1}\). Correct.

This option follows the \(\text{+1}\) pattern for all three letters.

Option 4: AXP : BZR

  • A to B: A is 1st, B is 2nd. Shift is \(\text{+1}\). Correct.
  • X to Z: X is 24th, Z is 26th. Shift is \(\text{+2}\). Incorrect.
  • P to R: P is 16th, R is 18th. Shift is \(\text{+2}\). Incorrect.

This option does not follow the \(\text{+1}\) pattern for all letters.

Comparing Shifts

Let's summarize the letter shifts for each option in a table:

Option 1st Letter Shift 2nd Letter Shift 3rd Letter Shift Follows \(\text{+1}\) Pattern?
APX : BQY (Given) A \(\to\) B (\(\text{+1}\)) P \(\to\) Q (\(\text{+1}\)) X \(\to\) Y (\(\text{+1}\)) Yes
JRA : KTB J \(\to\) K (\(\text{+1}\)) R \(\to\) T (\(\text{+2}\)) A \(\to\) B (\(\text{+1}\)) No
JLM : KMP J \(\to\) K (\(\text{+1}\)) L \(\to\) M (\(\text{+1}\)) M \(\to\) P (\(\text{+3}\)) No
CSN : DTO C \(\to\) D (\(\text{+1}\)) S \(\to\) T (\(\text{+1}\)) N \(\to\) O (\(\text{+1}\)) Yes
AXP : BZR A \(\to\) B (\(\text{+1}\)) X \(\to\) Z (\(\text{+2}\)) P \(\to\) R (\(\text{+2}\)) No

As the table shows, only the pair CSN : DTO follows the exact same \(\text{+1}\) shift pattern as the given pair APX : BQY.

Conclusion

The relationship between the letters in APX : BQY is a consistent shift of one position forward in the alphabet for each corresponding letter. Applying this rule to the options, we find that CSN : DTO exhibits the same pattern.

Revision Table: Key Concepts

Concept Description Relevance to Problem
Letter Analogy Finding a relationship between letter pairs or groups. The core task of the question.
Alphabetical Positioning Each letter has a numerical position (A=1, B=2, ... Z=26). Used to calculate letter shifts.
Pattern Identification Discovering the rule connecting the given pair. Crucial first step in solving the analogy.
Pattern Application Applying the discovered rule to the options. Used to verify which option fits the pattern.

Additional Information: Types of Letter Analogies and Solving Tips

Letter analogies can involve various types of patterns. Here are a few common ones and tips for solving:

  • Position Shift: Letters shift a fixed number of positions forward or backward in the alphabet (like in this problem, \(\text{+1}\) shift).
  • Skipping Letters: Letters might be related by skipping a specific number of letters in between (e.g., A to C skips B).
  • Reverse Alphabetical Order: The sequence might run backward (Z, Y, X...).
  • Vowel/Consonant Patterns: The relationship might involve vowels or consonants.
  • Combination of Rules: Some analogies combine different types of patterns for different letters in the group.

Tips for Solving:

  • Write down the alphabet and their positions (A=1, B=2, etc.) or keep it handy.
  • Systematically check the relationship between corresponding letters in the given pair.
  • Note down the pattern clearly (e.g., \(\text{+1}\), \(\text{+2}\), \(\text{-1}\)).
  • Apply the discovered pattern to the first part of each option pair.
  • Verify if the result matches the second part of the option pair.
  • Eliminate options that do not follow the pattern.

By understanding common patterns and using a systematic approach, you can efficiently solve letter analogy questions.

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Important Questions from Letter Based

  1. Select the option that is related to the third letter-cluster in the same way as the second letter-cluster is related to the first letter-cluster.

    PDK : QFN :: SJQ : ?

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

    FASTER : AEFRST :: KINGDOM : ?

  3. Select the option that is related to the third term in the same way as the second term is related to the first term.

    PRACTISE : ACEIPRST :: TECHNOLOGY : ?

  4. Select the option that is related to the third letter-cluster in the same way as the second letter-cluster is related to the first letter cluster.

    RJB : TGF :: QPG : ?

  5. Select the option that is related to the third word in the same way as the second word is related to the first word. (The words must be considered as meaningful English words and must not be related to each other based on the number of letters/number of consonants/vowels in the word.)

    Ant ∶ Antling ∶ ∶  Deer  ?

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