Math Prize 2021 Problem 20
Source:
September 20, 2021
Math Prize for Girls
Problem Statement
Let be the set of points such that and are positive integers less than or equal to 6. A magic grid is an assignment of an integer to each point in such that, for every square with horizontal and vertical sides and all four vertices in , the sum of the integers assigned to the four vertices is the same as the corresponding sum for any other such square. A magic grid is formed so that the product of all 36 integers is the smallest possible value greater than 1. What is this product?