One of the solutions to have 9 numbers in series as n to n+8. See picture below for solution example:
Nine consecutive integers are placed in the nine squares of a 3x3 grid. If every column, every row, and every diagonal adds up to the same number n and the middle number is 8 what is n?
Can you arrange the numbers from 1 to 9 on a tic tac toe board in a manner that the numbers in each row, column and diagonal adds up to 15. Remember that you have to use all the 9 numbers and thus you cannot repeat.
How many ways can we arrange the numbers 1 through 9 in a 3x3 grid such that the following conditions hold? - Every number is greater than the number directly above it. - Every number is greater than the number immediately to the left of it.
