If + means ×, - means ÷, × means + and ÷ means -, then:
$12+6\times 4-2÷2=?$

The correct answer is 72.

To solve this expression, we first need to substitute the original mathematical operators with the new operators as defined in the question rules:

• + means × (multiplication)
• - means ÷ (division)
• × means + (addition)
• ÷ means - (subtraction)

The original given expression is:

$12+6\times 4-2÷2$

Replacing the operators accordingly, we get the modified expression:

$12\times 6+4÷2-2$

Now, we evaluate the modified expression using 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 $4$ by $2$:

$4÷2=2$

Substituting back into the expression:

$12\times 6+2-2$

Step 2: Perform Multiplication

Next, multiply $12$ by $6$:

$12\times 6=72$

Substituting back into the expression:

$72+2-2$

Step 3: Perform Addition and Subtraction

Add $72$ and $2$:

$72+2=74$

Finally, subtract $2$:

$74-2=72$

Thus, the final value of the expression is 72.