Answer:
Hope this will help you......
The answer is c.
a. (2.2≠5.11) (2.2 is not equal to 5.11)
b. or 0.625 (0.625≠5.11) (0.625 is not equal to 5.11)
c. (5.11=5.11) (5.11 is equal to 5.11)
Therefore c is the answer
81-1= 80
80 / 2 = 40
D = 40
So:
40(2) = 81 - 1
Check out -m-a-t-h-w-a-y-.-c-o-m- (This helps a lot!)