Answer to math puzzle of January 5:

Algebra: The number of days in a non-leap year, 365, is special because it is the sum of 3 squares. What are they?

From the Jordan Middle School Einstein Problem Sets.

Solution: Easy, because there are 4 combinations!
18² + 5² + 4² = 324 + 25 + 16   or
16² + 10² + 3² = 256 + 100 + 9  or
14² + 12² + 5² = 196 + 144 + 25 or
12² + 11² + 10² = 144 + 121 + 100 which is, remarkably, the sum of three consecutive squares!

For more math puzzles, check out http://www.mathpuzzle.com/, http://mathschallenge.net/, http://www.princeton.edu/~mathclub/puzzles4.html and http://mathforum.org/k12/k12puzzles/