The correct answer that Is NOT equivalent to 24 is: 2x2x3x3.
Explanation: When you do the math for all of the other ones it equals 24.
1. 2x2x2x3.
Two times two is four. Then four times two is eight. Then eight times three is 24.
2. 2x2x6
Two times two is four. Then Four times six is 24.
3. 2x2x3x3
Two times two is four. Then four times three is twelve. Finally twelve times three is 36.
4. 2x4x3
Two times four is eight. Then eight times three is 24.
As you can see, the correct expression that DOES NOT equal to(or equivalent to) is the expression: 2x2x3x3
Hope this helps!!!