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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)

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re(2): solution | Comment 12 of 16 |
(In reply to re: solution by Shane Anderson)

I think someone needs to learn how to do math. On the first one 1 + 5 does indeed equal 7 (when you include the 1 carried over)and on the second 1 + 4 really does equal 6 (when you include the 1 carried over).
  Posted by Lee on 2004-05-15 02:43:38

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