Refer to the given number, symbol series and answer the question that follows.
(Left) 5 6 # 2 % 5 4 $ # $ 1 @ * 7 & % 2 & 2 7 5 % 3 (Right)
How many such symbols are there which are immediately preceded by a number and also immediately followed by a number?
1
1
2
4
3
2
4
3