Question 1
Consider the ‘I’ shaped diagram below:
Each square is filled with exactly one number from the following eight numbers $-1,-1,-1,0,0,1,1,1$ such that the sum of the numbers in each of the rows, column and four corners are all the same. How many ways are there to fill the diagram?
Each square is filled with exactly one number from the following eight numbers $-1,-1,-1,0,0,1,1,1$ such that the sum of the numbers in each of the rows, column and four corners are all the same. How many ways are there to fill the diagram?