I have spent too much time on this question. I am convinced this cannot be done. Please prove me right (or wrong) and explain why.
Below is a 5x5 grid. Digits 1 through 9 go in the 9 yellow boxes. Every digit must be used. Yellow boxes can only contain a single digit, nothing else.Obviously all 9 digits will have to be placed.
Bluish boxes will have the givem Math operators. Only + - * / ^ and = can be used. Nothing else.
Now can a grid be created where all vertical, horizontal and diagonal equations are correct? Direction of the equation not important.
I got horizontals, diagonals and two of the 3 verticals to work but not the middle.
Can this be done given the restrictions? Why?
Which operators will make this possible, if any.
Please don't say "not equal to" :)