Consider the following series:
$\text{N 3 \$ A 2 % P 5 # 7 E R ¥ 11 T 9 B O}$
if starting from A each alternate letter/number/symbol will be deleted which letter/number/symbol will be $3^{rd}$ to the left of the letter/number/symbol which is $4^{th}$ from the right end.
- $7$
- $11$
- $O$
- $\%$
- $R$
When we delete alternate letter/number/symbol starting from $\text{A,}$ then new series will $\text{A % 5 7 R 11 9 0}$
So, $3^{rd}$ to the left and $4^{th}$ from the right end $= 7^{th}$ from right end is $\%$
why considering deleted one