Kagabi, may pinasagutan ang kapatid ko sa akin.
3x3 magic square with a twist. I know grade 7 students know this.
When you sum up the digits diagonally, horizontally and vertically the answer should be zero.
Ready?
Using numbers -10, -7, -4, -3, 0, 3, 4, 7 and 10.
Can you answer it?
