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Question

Select the letter-cluster from among the given options that can replace the question mark (?) in the following series.

FPW, EQV, DRU, ?

The correct answer is

CST

Understanding the Letter Series Pattern

This question asks us to find the next letter-cluster in the given series: FPW, EQV, DRU, ?. To solve this type of problem, we need to look for a pattern or rule that connects consecutive letter-clusters. Typically, we analyze the progression of letters at each position (first, second, third, etc.) independently.

Step-by-Step Analysis of the Series

Let's break down the series by examining the letters in each position:

First Letter Analysis

  • The first letters of the clusters are F, E, D.
  • Let's look at their positions in the English alphabet (A=1, B=2, ... Z=26).
  • F is the 6th letter.
  • E is the 5th letter.
  • D is the 4th letter.
  • The pattern for the first letter is: \(6 \rightarrow 5 \rightarrow 4\). This is a decrease of 1 position each time.
  • Following this pattern, the next first letter should be the letter at position \(4 - 1 = 3\).
  • The 3rd letter in the alphabet is C.

Second Letter Analysis

  • The second letters of the clusters are P, Q, R.
  • Let's look at their positions in the English alphabet.
  • P is the 16th letter.
  • Q is the 17th letter.
  • R is the 18th letter.
  • The pattern for the second letter is: \(16 \rightarrow 17 \rightarrow 18\). This is an increase of 1 position each time.
  • Following this pattern, the next second letter should be the letter at position \(18 + 1 = 19\).
  • The 19th letter in the alphabet is S.

Third Letter Analysis

  • The third letters of the clusters are W, V, U.
  • Let's look at their positions in the English alphabet.
  • W is the 23rd letter.
  • V is the 22nd letter.
  • U is the 21st letter.
  • The pattern for the third letter is: \(23 \rightarrow 22 \rightarrow 21\). This is a decrease of 1 position each time.
  • Following this pattern, the next third letter should be the letter at position \(21 - 1 = 20\).
  • The 20th letter in the alphabet is T.

Forming the Next Letter-Cluster

Combining the next letters we found for each position:

  • First letter: C
  • Second letter: S
  • Third letter: T

The next letter-cluster in the series is CST.

Summary of Patterns

Here is a summary of the patterns for each letter position:

Position Letters in Series Alphabet Positions Pattern Next Letter
1st F, E, D 6, 5, 4 Decrease by 1 C (3rd)
2nd P, Q, R 16, 17, 18 Increase by 1 S (19th)
3rd W, V, U 23, 22, 21 Decrease by 1 T (20th)

The next term is formed by combining C, S, and T, which gives CST.

Revision Table: Letter Series Patterns

Understanding different types of letter series patterns is key to solving these questions. Common patterns include:

  • Sequential movement (forward or backward in the alphabet).
  • Skipping letters (e.g., every other letter).
  • Combining two or more independent patterns for different letter positions.
  • Patterns based on vowels or consonants.
  • Patterns based on numerical values of letters (A=1, B=2, etc.).

Additional Information: Solving Reasoning Questions

Letter series questions are a common type in logical reasoning. To improve your skills:

  • Memorize the alphabet and ideally, the corresponding numerical position of each letter.
  • Write down the given series clearly.
  • Analyze each position's letter sequence independently.
  • Look for arithmetic progressions or other simple patterns in the alphabet positions.
  • Test the identified pattern on the given terms to ensure it holds true throughout the series.
  • Practice with various types of letter series problems to recognize different patterns quickly.
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Important Questions from Alphabet Series

  1. Select the letter-cluster from among the given options that can replace the question mark (?) in the following series.

    KMTC, EVOM, OQXG, IZSQ, ?

  2. Select the set of letters that when sequentially placed in the blanks of the given letter series will complete the series.

    k_lmml_mk_mmk_lkkl_m
  3. Select the letter will replace the question mark (?) in the following series.

    C, B, B, C, Z, E, W, H, S, ?, N
  4. Which letter will replace the question mark (?) in the following letter series?

    E, J, N, Q, S, ?

  5. Select the combination of letters that when sequentially placed in the blanks of the given series will complete the series.
    C _ B N _ _ V_ _ H C _ B _ H

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