Burt Kaliski Jr. (@modulomathy)
3/12/12 10:48 AM
#math trivia for #March12: #72 is both a sum and a difference of squares. What are the squares?
The sum of squares is 36+36.
The difference has several possibilities: 81-9, 121-49, 361-289.
For further discussion, see the solution to #68.
modulomathy.com 