Analyzing Letter Cluster Pairs Using Alphabetical Order

The question asks us to identify the letter-cluster pair that does not follow the same logical pattern as the others, based on the English alphabetical order. We need to find the 'odd one out' among the given pairs.

Step 1: Understand the Grouping Rule

The problem states that three pairs are similar in a specific way related to alphabetical order. The note clarifies that the pattern is not based on the count or position of vowels and consonants. This means we should look at the sequential relationship or distance between the letters in the alphabet.

Step 2: Assign Numerical Values to Letters

To analyze the alphabetical order, let's assign a numerical value to each letter based on its position in the English alphabet (A=1, B=2, ..., Z=26).

Step 3: Analyze Each Letter-Cluster Pair

Let's examine the relationship between the letters in each pair. We will look at the difference between the first letter of the first cluster and the first letter of the second cluster, and the difference between the second letter of the first cluster and the second letter of the second cluster.

Pair 1: HL-OF

• H is the 8th letter.
• L is the 12th letter.
• O is the 15th letter.
• F is the 6th letter.
• Difference between the first letters: O - H = $15 - 8 = +7$.
• Difference between the second letters: F - L = $6 - 12 = -6$.
• Pattern Observed: (+7, -6)

Pair 2: DH-KA

• D is the 4th letter.
• H is the 8th letter.
• K is the 11th letter.
• A is the 1st letter.
• Difference between the first letters: K - D = $11 - 4 = +7$.
• Difference between the second letters: A - H = $1 - 8 = -7$.
• Pattern Observed: (+7, -7)

Pair 3: JN-QH

• J is the 10th letter.
• N is the 14th letter.
• Q is the 17th letter.
• H is the 8th letter.
• Difference between the first letters: Q - J = $17 - 10 = +7$.
• Difference between the second letters: H - N = $8 - 14 = -6$.
• Pattern Observed: (+7, -6)

Pair 4: FJ-MD

• F is the 6th letter.
• J is the 10th letter.
• M is the 13th letter.
• D is the 4th letter.
• Difference between the first letters: M - F = $13 - 6 = +7$.
• Difference between the second letters: D - J = $4 - 10 = -6$.
• Pattern Observed: (+7, -6)

Step 4: Identify the Odd Pair Out

By comparing the patterns observed in each pair:

• HL-OF follows the pattern (+7, -6).
• DH-KA follows the pattern (+7, -7).
• JN-QH follows the pattern (+7, -6).
• FJ-MD follows the pattern (+7, -6).

Three pairs (HL-OF, JN-QH, FJ-MD) share the common pattern where the first letters have a difference of +7 and the second letters have a difference of -6. The pair DH-KA deviates from this pattern because the difference between its second letters is -7, not -6.

Therefore, DH-KA is the letter-cluster pair that does not belong to the group.