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Way back in my Jr. High days, I had a math problem that you had a 9 square grid and you had to have the numbers add up to the same total going up, down and diagonal. There was a formula but I forgot it(senior moment). Can you help me? Thank you

- jwc471
**Posts:**1**Joined:**31 December 2005

not sure but supose you want to add the numbers 1-100 up you take

101*50 you get 5050.

the forumula is N as a real number .5N(N+1)

101*50 you get 5050.

the forumula is N as a real number .5N(N+1)

- Chessmaster
**Posts:**191**Joined:**21 December 2005

Seems you're looking for Magic squares.

There are mehods to generate them.

It's well explained on Wikipedia : http://en.wikipedia.org/wiki/Magic_square

There are mehods to generate them.

It's well explained on Wikipedia : http://en.wikipedia.org/wiki/Magic_square

- Jean-Christophe
**Posts:**149**Joined:**22 January 2006

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