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Question

Refer to the following letter, symbol series and answer the question that follows. 

Counting to be done from left to right only.

(Left) I A & @ @ # X % A N * @ W U # P $ U X & K Y (Right)

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

This question was previously asked in
RRB ALP 2025 CBT 2 Wiremen Question Paper (28-Jul-2026) (Shift 2)
The correct answer is
2

Identifying Symbols Preceded by Letter and Followed by Symbol

The question asks us to find the number of symbols in the given series that satisfy two conditions: they must be immediately preceded by a letter and immediately followed by another symbol. We need to examine the series from left to right.

Series: \(I A & @ @ # X % A N * @ W U # P \) U X & K Y$

Step-by-Step Analysis

  1. Scan the series character by character, looking for symbols.

  2. For each symbol found, check the character immediately before it and immediately after it.

    • Condition 1: The preceding character must be a letter (A-Z).
    • Condition 2: The succeeding character must be a symbol (@, #, %, *, $, &).
  3. Apply the conditions to the series:

    • \(I A &\): '&' is a symbol. Preceded by 'A' (letter). Followed by '@' (symbol). Match! (Count = 1)
    • \(A & @\): '@' is a symbol. Preceded by '&' (symbol). Fails condition 1.
    • \(& @ @\): '@' is a symbol. Preceded by '@' (symbol). Fails condition 1.
    • \(@ @ #\): '#' is a symbol. Preceded by '@' (symbol). Fails condition 1.
    • \(X % A\): '%' is a symbol. Preceded by 'X' (letter). Followed by 'A' (letter). Fails condition 2.
    • \(A N *\): '*' is a symbol. Preceded by 'N' (letter). Followed by '@' (symbol). Match! (Count = 2)
    • \(N * @\): '@' is a symbol. Preceded by '*' (symbol). Fails condition 1.
    • \(U # P\): '#' is a symbol. Preceded by 'U' (letter). Followed by 'P' (letter). Fails condition 2.
    • \(P \) U\(: '\)' is a symbol. Preceded by 'P' (letter). Followed by 'U' (letter). Fails condition 2.
    • \(X & K\): '&' is a symbol. Preceded by 'X' (letter). Followed by 'K' (letter). Fails condition 2.
  4. The symbols that meet both criteria are '&' (after A) and '*' (after N).

Final Count

There are exactly 2 such symbols in the series that are immediately preceded by a letter and immediately followed by a symbol.

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Important Questions from Alpha-numeric series

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    DFA, HJE, LNI, PRM, ?

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  3. Which letter-cluster will replace the question mark (?) to complete the given series?
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  4. Select the combination of letters that when sequentially placed in the blanks of the given series will complete the series.
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  5. What should come in place of the question mark (?) in the given series based on the English alphabetical order?

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