If C and D are positive integers, and the remainder obtained when C is divided by D is the same as the remainder obtained when D is divided by C, which of the following is a possible value of CD? Choose the correct option.
A) 62	B) 55	C) 48	D) 31	E) 25
I am not too sure on this. I guess it is possible only when C and D are both same. If they are both same, CD must be a perfect square.   25 is a perfect square.   Ans:25
<result>E</result>
If C and D are positive integers, and the remainder obtained when C is divided by D is the same as the remainder obtained when D is divided by C, which of the following is a possible value of CD?