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Question

Refer to the following number, symbol series and answer the question. (Counting to be done from left to right only. All numbers are single digit number only.).

(Left) ? / & @ 9 # @ % * / \ $ % * < & 5 5 2 > 3 (Right)

How many such numbers are there each of which is immediately preceded by a symbol and also immediately followed by a symbol?

This question was previously asked in
RRB NTPC 2025 Under Graduate CBT 2 Question Paper PDF (17-Sep-2026) (Shift 1)
The correct answer is

One

List the given series with positions from left to right: ? / & @ 9 # @ % * / \ $ % * < & 5 5 2 > 3.

The single-digit numbers in the series are 9, 5, 5, 2 and 3. Check each one to see whether the elements immediately before and after it are symbols.

9: preceded by @ (symbol) and followed by # (symbol) — qualifies.

First 5: preceded by & (symbol) but followed by 5 (number) — does not qualify.

Second 5: preceded by 5 (number) and followed by 2 (number) — does not qualify.

2: preceded by 5 (number) — does not qualify.

3: followed by nothing (end of series) — does not qualify.

Only the digit 9 has a symbol on both sides.

Hence, the required count is One.

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