5.
Refer to the following number and symbol series and answer the question that follows. Counting to be done from left to right only.
(Left) 7 & 9 ^ # 1 * 5 ≺ 2 6 ≡ 4 ∆ 3 $ @ 8 (Right)
How many such symbols are there, each of which is immediately preceded by an odd number but NOT immediately followed by an even number?
(Note: a combination of three elements should be considered while answering this question.)