Understanding the Letter Cluster Reasoning Question

The question asks us to identify the odd one out from four letter-cluster pairs based on their relationship within the English alphabetical order. Three pairs share a common pattern, while one pair does not.

Analyzing Letter Cluster Pairs Based on Alphabetical Order

We need to find the position of each letter in the English alphabet and analyze the pattern connecting the letters within each pair. The note clarifies that the pattern is not related to vowels/consonants or their positions.

Option 1: LI - EA

• Cluster LI
  • The letter L is the 12^th letter of the alphabet.
  • The letter I is the 9^th letter of the alphabet.
  • The difference in position is calculated as: $12 - 9 = 3$.
• Cluster EA
  • The letter E is the 5^th letter of the alphabet.
  • The letter A is the 1^st letter of the alphabet.
  • The difference in position is calculated as: $5 - 1 = 4$.

In this pair, the difference between the letter positions within the first cluster (LI) is 3, but the difference within the second cluster (EA) is 4. This inconsistency is noteworthy.

Option 2: TQ - MJ

• Cluster TQ
  • The letter T is the 20^th letter.
  • The letter Q is the 17^th letter.
  • Difference: $20 - 17 = 3$.
• Cluster MJ
  • The letter M is the 13^th letter.
  • The letter J is the 10^th letter.
  • Difference: $13 - 10 = 3$.

In this pair, the difference between the letter positions is 3 for both clusters (TQ and MJ). This shows consistency.

Option 3: VS - OL

• Cluster VS
  • The letter V is the 22^nd letter.
  • The letter S is the 19^th letter.
  • Difference: $22 - 19 = 3$.
• Cluster OL
  • The letter O is the 15^th letter.
  • The letter L is the 12^th letter.
  • Difference: $15 - 12 = 3$.

Similar to the previous option, the difference between the letter positions is 3 for both clusters (VS and OL). This pair also exhibits consistency.

Option 4: PM - IF

• Cluster PM
  • The letter P is the 16^th letter.
  • The letter M is the 13^th letter.
  • Difference: $16 - 13 = 3$.
• Cluster IF
  • The letter I is the 9^th letter.
  • The letter F is the 6^th letter.
  • Difference: $9 - 6 = 3$.

This pair also maintains a consistent difference of 3 between the letter positions within both clusters (PM and IF).

Identifying the Odd Letter-Cluster Pair

Let's summarize the findings:

• LI - EA: Differences are 3 and 4.
• TQ - MJ: Differences are 3 and 3.
• VS - OL: Differences are 3 and 3.
• PM - IF: Differences are 3 and 3.

Three of the pairs (TQ - MJ, VS - OL, and PM - IF) consistently show a difference of 3 between the alphabetical positions of the letters within each cluster. The pair LI - EA is the only one where the differences are not consistent (3 and 4). Therefore, LI - EA is the letter-cluster pair that does not belong to the group.