The following questions are based on letter series in which some letters are missing. The missing letters are given in a proper sequence as one of the alternatives among the given four alternatives under each question ab - bc - c - ba - c

Options

A. baac
B. aabb
C. caab
D. aaab

Explanation

To solve the letter series problem, we need to identify the pattern in the given sequence and fill in the missing letters accordingly. The series provided is:

ab - bc - c - ba - c

Let's break down the solution step by step:

### Step 1: Identify the Pattern
The series consists of pairs of letters and single letters. We can observe the following segments:

1. ab
2. bc
3. c
4. ba
5. c

### Step 2: Analyze the Segments
Let's rewrite the segments for clarity:
- The first segment is "ab".
- The second segment is "bc".
- The third segment is just "c".
- The fourth segment is "ba".
- The fifth segment is again "c".

### Step 3: Look for Repetition
From the segments, we can see that "ab" and "bc" are followed by "c". Then "ba" appears, followed again by "c". This suggests a repeating pattern involving the letters A, B, and C.

### Step 4: Fill in the Missing Letters
Now, let's fill in the missing letters based on the identified pattern:
- After "ab", we have "bc", which is correct.
- The next letter is missing after "bc", but we can see that it should be "a" to continue the sequence.
- After "c", we have "ba", which is also correct.
- The next letter after "ba" should again be "c", which is already provided.

So, the complete sequence should be:
- ab - bc - c - ba - c - a

### Step 5: Verify the Sequence
Now let's verify the entire sequence:
- ab
- bc
- c
- ba
- c
- a

This shows a consistent pattern of letters A, B, and C.

### Final Answer
The missing letters in the sequence are: **a**.