Refer to the given number, and symbol series and answer the question that follows.
(Left) ¥ 1 λ 2 5 $ 2 # 1 & 2 3 € 1 5 6 % ¥ 2 @ 6 (Right)
How many such symbols are there, each of which is immediately preceded by a symbol and also immediately followed by a number?
1
2
2
1
3
0
4
3