A letter series is given below, in some letters are missing. Find the proper sequence and fill the missing letters
BAA_AAB_A_A_BAA_

Options

A. BABAB
B. AABBA
C. ABABA
D. ABAAB

Answer

To solve the problem of filling in the missing letters in the sequence BAA_AAB_A_A_BAA_, we will analyze the pattern in the series step by step.

### Step 1: Identify the given sequence
We start with the sequence:
BAA_AAB_A_A_BAA_

### Step 2: Break down the sequence
Let's rewrite the sequence with placeholders for the missing letters:
- BAA _ AAB _ A _ A _ BAA _

### Step 3: Look for patterns
We can observe that the sequence seems to repeat certain patterns. The first part "BAA" appears at the beginning and the end.

### Step 4: Fill in the first blank
After "BAA", we see "AAB". To maintain the pattern, it is logical to fill the first blank with "B" since we have "BAA" followed by "AAB". Thus, we have:
- BAA B AAB _ A _ A _ BAA _

### Step 5: Fill in the second blank
Next, we look at the second blank. After "AAB", it seems logical to fill this with "A" to continue the pattern:
- BAA B AAB A A _ BAA _

### Step 6: Fill in the third blank
Now we have "A" followed by another blank. To maintain the sequence, we can fill this with "B":
- BAA B AAB A A B BAA _

### Step 7: Fill in the fourth blank
Finally, we look at the last blank. Since we are following the pattern established earlier, we can fill this with "A":
- BAA B AAB A A B BAA A

### Step 8: Finalize the sequence
Now, we have the complete sequence:
- BAA B AAB A A B BAA A

### Final Answer
The completed sequence is: **BAAB AAB AAB BAA A**