Solution To: That's Some Sum

Here is the original problem:

Use the numbers 2, 3, 4, 5, 6, 7, 8, 9, and 10. Place exactly one of these numbers in each position in the figure so that the sum for each row, column, and diagonal is 18.

Solution:



Now your answer might look a bit different and you might be wondering if your answer is in fact correct.  It most likely is.  The truth is that there are many answers that look different than this one but really, deep down, are the same answer.  It is just a permutation of the same answer.  Here is what you need to know.

6 must go in the center square.
3, 5, 7, and 9 must be located in the corner squares with 3 & 9 in opposite corners and 7 & 5 in opposite corners.
2, 4, 8, and 10 must go in the remaining 4 squares and be placed so that each row, column, and diagonal equal 18.

Sincerely,
The Math Freak