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In the series: X Y @ Z # A B $ C % DE & F. How many letters are there which are immediately followed by a symbol?
2
3
4
5
4
Focus only on letters (X, Y, Z, A, B, C, D, E, F) and check if the immediate next character is a symbol (@, #, $, %, &).
Focus only on letters (X, Y, Z, A, B, C, D, E, F) and check if the immediate next character is a symbol (@, #, $, %, &).
Mapping the Series
List the sequence and identify all letters: X, Y, Z, A, B, C, D, E, F.
Evaluating Letter-Symbol Pairs
Check each letter: X followed by Y (No), Y followed by @ (Yes), Z followed by # (Yes), A followed by B (No), B followed by $ (No), C followed by % (No), D followed by E (No), E followed by & (No), F has no following character (No).
Final Verification
The letters immediately followed by symbols are Y (@) and Z (#). Total count is 2.
B: 3 is incorrect as only Y@ and Z# qualify, C: 4 is incorrect as it overcounts by including irrelevant letters, D: 5 is incorrect as there are only two valid letter-symbol pairs.
A is correct because the series contains exactly two letters (Y and Z) that are immediately followed by a symbol (@ and # respectively).
In alphanumeric series, always break the sequence into groups based on category (letters, numbers, symbols) to avoid missing pairs or double-counting.