80 - 9
64 - 8
36 - 6
Jul-49
Answer is Right!
Answer is Wrong!
The answer is D. 7 – 49.
In each of the other options, the difference between the two numbers is a perfect square. For example, 80 – 9 = 71, which is a perfect square. 64 – 8 = 56, which is a perfect square. 36 – 6 = 30, which is a perfect square. However, 7 – 49 = -42, which is not a perfect square.