Question

To open gate A, evaluate the expression:
$9\times (3÷3)+2-2+(9\times 2)÷2÷9+12$

• A. 22
• B. 23
• C. 24

Answer 1

The correct option is A 22

As per the PEMDAS rule, the parentheses operation must be performed first.

Let's proceed by evaluating the expression inside parentheses, one by one, starting from the left.

$9\times (3÷3)+2-2+(9\times 2)÷2÷9+12$
$=9\times 1+2-2+(9\times 2)÷2÷9+12$
$=9\times 1+2-2+18÷2÷9+12$

Now, we have multiplication, addition, subtraction and division operations.

Let's perform the multiplication and division operations, starting from the left.

$9\times 1+2-2+18÷2÷9+12$
$=9+2-2+18÷2÷9+12$
$=9+2-2+9÷9+12$
$=9+2-2+1+12$

Now, we perform the addition and subtraction operations.

$9+2-2+1+12$
$=11-2+1+12$
$=9+1+12$
$=10+12$
$=22$