Analyzing Letter Clusters: Finding the Odd One Out

This question asks us to identify the letter cluster that is different from the other three based on a certain pattern or rule. We are given four letter clusters: FUBY, WEKP, SHOL, and PKRI.

To solve this type of logical reasoning question, we often look at the position of each letter in the English alphabet (A=1, B=2, ..., Z=26). Let's list the positional values for the letters in each cluster:

• FUBY: F=6, U=21, B=2, Y=25
• WEKP: W=23, E=5, K=11, P=16
• SHOL: S=19, H=8, O=15, L=12
• PKRI: P=16, K=11, R=18, I=9

Exploring Patterns in Letter Clusters

Let's try to find a relationship or pattern among the letters in each cluster. Common patterns involve sums, differences, or products of positional values, or relationships like opposite letters.

Let's consider the sum of the positional values for each letter cluster:

• FUBY: \(6 + 21 + 2 + 25\)
• WEKP: \(23 + 5 + 11 + 16\)
• SHOL: \(19 + 8 + 15 + 12\)
• PKRI: \(16 + 11 + 18 + 9\)

Calculating the Sum of Positional Values

Let's calculate the sum for each cluster:

From the table, we can observe the following sums:

• FUBY: 54
• WEKP: 55
• SHOL: 54
• PKRI: 54

Three of the letter clusters (FUBY, SHOL, and PKRI) have a sum of letter positions equal to 54. The letter cluster WEKP has a sum of letter positions equal to 55, which is different from the others.

Identifying the Different Letter Cluster

Based on the pattern where the sum of the alphabetical positions of the letters in the cluster is consistent, the cluster WEKP is the one that does not follow this pattern. Therefore, WEKP is the different letter cluster.

Conclusion: Selecting the Odd Letter Cluster

By analyzing the sum of the positional values of the letters in each cluster, we found that FUBY, SHOL, and PKRI follow the same rule (sum = 54), while WEKP follows a different rule (sum = 55). Thus, the letter-cluster that is different is WEKP.

Revision Table: Letter Cluster Analysis

Additional Information: Solving Letter Series and Analogy Problems

Problems involving letter clusters often appear in logical reasoning and verbal ability tests. Here are some common strategies used to solve them:

• Positional Values: Always start by writing down the alphabetical position of each letter.
• Sum/Difference/Product: Look for patterns in the sum, difference, or even product of these positions.
• Differences Between Adjacent Letters: Check the difference in position between consecutive letters (e.g., +2, -3, +2, -3...).
• Vowels/Consonants: Count the number of vowels or consonants in each cluster.
• Alphabetical Order/Reverse Order: Check if letters are arranged in alphabetical or reverse alphabetical order, or if there's a skip pattern.
• Opposite Letters: Some patterns involve pairs of letters that are opposite each other in the alphabet (A is opposite Z, B is opposite Y, etc. Position sum is always 27).
• Common English Words/Roots: Sometimes the clusters might relate to parts of words, though this is less common in abstract letter series.

Practice with different types of letter series and analogy questions will help you quickly identify the underlying pattern.