RRB Technician Grade I 19 Dec 2024 Shift 1 Paper

Concept:We need to count only those symbols which have a letter immediately to their left and a number immediately to their right.This pattern is: Letter $-$ Symbol $-$ Number.Explanation:The given series is: $6,\ 2,\ 8,\ \#,\ 7,\ \backslash,\ 2,\ L,\ \%,\ 9,\ 3,\ 3,\ \backslash,\ /,\ +,\ H,\ 2,\ S,\ P,\ \#,\ H$.Scan the series from left to right and check every symbol position.The symbol $\%$ appears after $L$, which is a letter, and before $9$, which is a number.So $\%$ satisfies the condition: $L\ \%\ 9$.Now check the other symbols: $\#$, $\backslash$, $\backslash$, $/$, $+$, and $\#$ appear either after a number or after another symbol, so they do not fit the required pattern.Also, the symbol $\#$ between $P$ and $H$ has a letter before it, but the element after it is $H$, a letter, not a number.Therefore, there is exactly one symbol that is immediately preceded by a letter and immediately followed by a number.Answer:Option A: One.