If @ = $\times$, # = $-$, $ = $÷$ and % = $+$, then evaluate:
8 @ 3 # 4 % 6 $ 2

The correct answer is 23 (which corresponds to the option with title 23).

To evaluate the given mathematical expression, we first replace each symbol with its corresponding mathematical operator as defined in the question:

$@$ represents multiplication ($\times$)
$\#$ represents subtraction ($-$)
$\$$ represents division ($÷$)
$\%$ represents addition ($+$)

The original expression is:

8 @ 3 # 4 % 6 $ 2

Substituting the respective operators into the expression gives:

$8\times 3-4+6÷2$

Now, we solve the expression step-by-step following the standard order of operations (BODMAS / PEMDAS rule: Division and Multiplication from left to right, followed by Addition and Subtraction from left to right).

Step 1: Perform Division

First, divide 6 by 2:

$6÷2=3$

The expression now becomes:

$8\times 3-4+3$

Step 2: Perform Multiplication

Next, multiply 8 by 3:

$8\times 3=24$

The expression now becomes:

$24-4+3$

Step 3: Perform Addition and Subtraction from Left to Right

Subtract 4 from 24:

$24-4=20$

Finally, add 3 to 20:

$20+3=23$

Thus, the final evaluated value is 23.