QUESTION

# Two consecutive even numbers can be....A. $x,x + 1$B. $x,x + 2$C. $x,x - 1$D. $x,2x$

Let one number is taken as $x$
Hence if one number we have taken is $x$ the other would be either $x - 2$ or $x + 2$.
Note:- In this question we assumed the other number to be $x$ and as we concluded that the difference between two consecutive even numbers or two consecutive odd numbers would be two therefore the other number would be either $x - 2$ or $x + 2$.