Refer to the following number and symbol series and answer the question that follows. Counting is to be done from left to right only.
(Left) 2 & 6 @ 8 $ 7 & 4 Ω 9 # 1 * 8 @ Ω 9 1 (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?

Correct option is B

We must find symbols (like @, &, $, etc.) that are:
1. Preceded by an odd number (like 1, 3, 7, 9...)
2. Not followed by an even number (like 2, 4, 6, 8...)
On scanning the sequence:
· Only @ after 1 and followed by Ω fits both conditions. So, only 1 symbol satisfies the condition.
Explanation of options: (a) ✘ Overcounts cases that don't match both conditions. (b) ✔ Only one valid case: 1 @ Ω, where @ is after odd and not followed by even. (c) ✘ Miscounts by including symbols after odd numbers but followed by even numbers. (d) ✘ Incorrect because there is one matching instance; not none.