Mr. X and Mr. Y live in the same avenue with only 9 houses between them. The number on their houses were both prime, and Mr. X found that he could express the number of his house as the sum of the squares of the digits of Mr. y's house number.
What were their house numbers ?

(In reply to the answer is by Jim)

I think you reversed them.
13 = 2² + 3²

Posted by SilverKnight on 2003-12-04 12:30:07