Question

In the following letter series, some of the letters are missing which are given in that order as one of the alternatives below it. Choose the correct alternative.
_ a _ b _ abaa _ bab _ abb}

• A. aaabb
• B. ababb
• C. babab
• D. babba

Hint:

In letter series with a/b patterns, check for \textbf{alternation and repetition consistency}.

Answer 1

The Correct Option is B

Concept: Look for a repeating pattern of letters (like groups of a and b). Step 1:Write the sequence: \[ _ a _ b _ abaa _ bab _ abb \]
Step 2:Observe pattern:

• Frequent repetition of patterns like ab, aba, abb
• Suggests alternating and structured placement of a and b

Step 3:Try option (B) ababb: Fill sequentially: \[ \underline{a}a\underline{b}b\underline{a}abaa\underline{b}bab\underline{b}abb \] This forms a consistent and smooth pattern of alternating letters.
Step 4:Other options break the pattern or create irregular sequences.}
Step 5:Final Answer: \[ \text{ababb} \]