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Sum Rotation (Posted on 2004-05-11) Difficulty: 3 of 5
The numbers 1 through 9 are arranged in a 3 x 3 grid so that each number is in the grid exactly once. They are arranged such that the top row plus the middle row gives the bottom row. If the grid forms another such addition when it is rotated 90 degrees to the left, what is its composition?

(Note: The numbers don't flip, for example 6 doesn't turn into 9.)

No Solution Yet Submitted by Gamer    
Rating: 3.2500 (4 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)
re: solution | Comment 2 of 16 |
(In reply to solution by derek)

Derek,

Very nice.  I encourage you to show how you arrived at your solution, and discuss if these are the only two possible answers.

If you used a program to help solve this, please post it as well.

- SK

  Posted by SilverKnight on 2004-05-11 17:56:58

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