Refer to the following number and symbol series and answer the question that follows. Counting to be done from left to right only.
(Left) 9 # 1 2 @ 8 $ 7 & 3 Ω & % 4 6 * £ 5 (Right)
How many such symbols are there, each of which is immediately preceded by an even number but not immediately followed by an odd number?
1
Zero
2
Two
3
One
4
More than two