Understanding Letter Series Patterns

This question asks us to identify the pattern in a given letter series and find the missing term that completes it. Letter series questions test your ability to recognize logical sequences in alphabetical order.

Analyzing the Given Letter Series: AB, CD, EF, GH, ?

Let's look at the terms in the series one by one:

• The first term is AB. These are the 1st and 2nd letters of the English alphabet.
• The second term is CD. These are the 3rd and 4th letters of the English alphabet.
• The third term is EF. These are the 5th and 6th letters of the English alphabet.
• The fourth term is GH. These are the 7th and 8th letters of the English alphabet.

We can observe two main patterns here:

1. Each term consists of two consecutive letters from the English alphabet.
2. The first letter of each term is the letter that immediately follows the second letter of the previous term.

Identifying the Pattern to Find the Next Term

Let's trace the sequence based on our observations:

• After AB, the next term starts with C (which follows B). The term is CD (C followed by D).
• After CD, the next term starts with E (which follows D). The term is EF (E followed by F).
• After EF, the next term starts with G (which follows F). The term is GH (G followed by H).

Following this established pattern, after GH, the next term should start with the letter that immediately follows H in the alphabet. The letter after H is I.

Since each term consists of two consecutive letters, the letter following I is J.

Therefore, the next term in the series is IJ.

Verifying with the Options

Let's compare our derived term IJ with the given options:

• Option 1: HJ (Does not follow the pattern; starts with H again and then J)
• Option 2: HK (Does not follow the pattern; starts with H and skips J)
• Option 3: IJ (Matches our derived term)
• Option 4: JI (Does not follow the pattern; starts with J and is not consecutive alphabetical order in the standard direction)

The term IJ perfectly fits the pattern observed in the series.

Conclusion for the Letter Series

Based on the consistent pattern of using consecutive alphabetical letters for each term and starting the subsequent term with the letter immediately following the second letter of the preceding term, the missing term is IJ.

Revision Table: Letter Series Patterns

Additional Information on Reasoning Questions

Letter series questions are a common type of logical reasoning problem. They require careful observation to detect the underlying rule or pattern governing the sequence of letters or groups of letters.

Key strategies for solving letter series questions:

• Write down the alphabet (A-Z) and their positions (1-26).
• Look at the relationship between consecutive letters within a term. Are they consecutive, alternating, or following another rule?
• Look at the relationship between the last letter of one term and the first letter of the next term.
• Check if there's a pattern based on the alphabetical position numbers.
• Consider if there are multiple patterns (e.g., one pattern for the first letter of each term, another for the second letter).

Practicing various types of letter series problems helps in quickly identifying patterns during exams.