MathDB
Math Prize 2021 Problem 20

Source:

September 20, 2021
Math Prize for Girls

Problem Statement

Let GG be the set of points (x,y)(x, y) such that xx and yy are positive integers less than or equal to 6. A magic grid is an assignment of an integer to each point in GG such that, for every square with horizontal and vertical sides and all four vertices in GG, 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?