If the two-digit integers A and B are positive and have the same digits, but in reverse order, which of the following could be the sum of A and B?	Answers:  A) 53  B) 54  C) 55  D) 56  E) 57
A two-digit number "cd" can be expressed algebraically as 10c+d.   The sum of A + B = (10c+d)+(10d+c)=11(c+d).   The only answer that is a multiple of 11 is 55.   The answer is 55.
<result>C</result>
If the two-digit integers A and B are positive and have the same digits, but in reverse order, which of the following could be the sum of A and B?