The 3x3 Magic square for 1 thru 9 numbers, and addition only (15) is well known.

I am wondering if there are 3x3 Magic squares with answers other than 15 that can be built with multiple math operations ( +, -, X or /) with 1 to 9 numbers.

One may use any of these operations (not just a single one) to develop the square. So if the square is

1 2 3

4 5 6

7 8 9

Then you can use 1+2x3 or 1-2+3 etc etc for development of the square.

All rows and columns and diagonals must result in a same positive or negative integer.

I was only able to do this for rows and columns as below

enter image description here

  • $\begingroup$ Correct. Sorry for the error $\endgroup$ – DEEM May 27 '18 at 23:05

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