Question

With respect to above sequence which of the following can replace the question mark (?) to complete the analogy:
B7C : K\$T :: 75X : \$X5 :: ____?
Sequence: (Left) 2 * B Q 8 7 # C 5 P X T 6 $ 4 M K 3 @ (Right)

• A. A, C and D only
• B. B and E only
• C. B, C and E only
• D. C and D only

Hint:

Write down the index numbers for both ends of the sequence to make comparisons easy.
Once the left-to-right and right-to-left symmetry is recognized, matching is just a matter of checking position indices.

Answer 1

The Correct Option is A

Step 1: Understanding the Question:
This question tests symbolic series analysis and analogy recognition.
We are given an alphanumeric string and two example analogies that demonstrate a specific positional rule.
We must identify this rule and find which of the given options (A to E) logically continue this analogy.

Step 2: Detailed Explanation:

• Analyze the First Analogy (B7C : K\$T):
Let us find the positions of the characters in the sequence from the Left and Right ends:
- `B` is the 3rd character from the Left. `K` is the 3rd character from the Right.
- `7` is the 6th character from the Left. `\$‘ is the 6th character from the Right.
- ‘C‘ is the 8th character from the Left. ‘T‘ is the 8th character from the Right.
This demonstrates a symmetrical left-to-right to right-to-left mapping.

• Verify with the Second Analogy (75X : \$X5):
- `7` is the 6th from the Left. `\$‘ is the 6th from the Right.
- ‘5‘ is the 9th from the Left. ‘X‘ is the 9th from the Right.
- ‘X‘ is the 11th from the Left. ‘5‘ is the 11th from the Right.
This confirms the rule: each character position from the left maps to its corresponding symmetric position from the right.

• Evaluate the Statements:
- Statement A (*Q7 : 3M\$):
- `*` is 2nd from Left $arrow$ 2nd from Right is `3` (Correct).
- `Q` is 4th from Left $arrow$ 4th from Right is `M` (Correct).
- `7` is 6th from Left $arrow$ 6th from Right is `\$‘ (Correct).
Thus, Statement A is True.
- Statement C (Q#5 : M6X):
- ‘Q‘ is 4th from Left $\rightarrow$ 4th from Right is ‘M‘ (Correct).
- ‘#‘ is 7th from Left $\rightarrow$ 7th from Right is ‘6‘ (Correct).
- ‘5‘ is 9th from Left $\rightarrow$ 9th from Right is ‘X‘ (Correct).
Thus, Statement C is True.
- Statement D (*8# : 346):
- ‘*‘ is 2nd from Left $\rightarrow$ 2nd from Right is ‘3‘ (Correct).
- ‘8‘ is 5th from Left $\rightarrow$ 5th from Right is ‘4‘ (Correct).
- ‘#‘ is 7th from Left $\rightarrow$ 7th from Right is ‘6‘ (Correct).
Thus, Statement D is True.

Step 3: Final Answer:
Statements A, C, and D are correct analogies, which corresponds to option (A).