Refer to the following letter, symbol series and answer the question that follows.
Counting to be done from left to right only.
(Left) 2 + % 4 6 9 # 1 * £ 5 @ 8 $ 7 & 3 Ω (Right)
How many such symbols are the re each of which is immediately preceded by a number and also immediately followed by another number?

​(Left) 2 + % 4 6 9 # 1 * £ 5 @ 8 $ 7 & 3 Ω (Right)

Logic: Number | Symbol | Number

(Left) 2 + % 4 6   9 # 1   * £   5 @ 8   $    7 & 3   Ω (Right)

(Left) 2 + % 4 6 9 # 1 * £ 5 @   8 $ 7   & 3 Ω (Right)
So, such Four symbols are the re each of which is immediately preceded by a number and also immediately followed by another number.

Thus, the correct option is: (d)