AB
+BA
___
101
In the addition problem above, A and B represent digits in two different two-digit numbers. What is the sum of A and B? Choose the correct answer.
A) 6	B) 8	C) 10	D) 11	E) 14
two ways to do it..   1) straight logic..   we can see that ones digit is 1 when units digit B and A are added..   only 10 fits in..   10
<result>C</result>
AB
+BA
___
101
In the addition problem above, A and B represent digits in two different two-digit numbers. What is the sum of A and B?