Answer:
The correct option is a.
Step-by-step explanation:
Given information:
Number of elements in set A = 4
Number of elements in set B = 3
We need to find n(A × B). It means we have to find the number of elements in set A × B.
If P and Q are two sets with elements m and n respectively, then the number of element in the set P × Q is m × n.



The value of n(A × B) is 12. Therefore the correct option is a.
Associative property of addition.
This means that no matter where you put the parenthesis, you will get the same solution.
Hope this helps!
You just need to replace x with the value given
x = -5
-27
27
-8
-16
x = -15
-67
57
-20
-28
× = 0
-7
12
-2
-10
1/3 because 4 to 12 can be written as 4/12 which can be simplified to 1/3
And 1/3 of 6 is two and if you reverse the process you would 4 into 12 three times and then find what goes into 6 three times with is 2