Fill in the square grid problem

Given a 9x9 square board. Fill in the natural numbers from 1 to 81 in the board, so that each box has only one number, and the product of the numbers in each row and each column is the same.

Puzzle: Hang fills in the natural numbers from 1 to 81 in the table above, each square fills in exactly one number, so that when listing the product of the numbers in each row (list A) and the product of the numbers in each column (list B), then list A and list B are the same (maybe in different order).

If Hang can do it, Tam will invite Hang to drink milk tea. Question: Can Hang drink Tam's free milk tea?

>>>See solution

Vo Quoc Ba Can

Math Teacher, Archimedes Academy Hanoi

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