The result must hold for any three-digit number with hundreds digit being 2 more than the units digit. $301$ is such a number. Evaluating, we get $301-103=198$. Thus, the units digit in the final result is $(\mathbf{E}) 8$ 
The hundreds digit of a three-digit number is $2$ more than the units digit. The digits of the three-digit number are reversed, and the result is subtracted from the original three-digit number. What is the units digit of the result? (2010 AMC 8 Problem, Question \#22) 
Options:
(1) $$0$$ 
(2) $$2$$ 
(3) $$4$$ 
(4) $$6$$ 
(5) $$8$$ 