2024 AMC 8 Problems/Problem 16

Revision as of 18:42, 25 January 2024 by Arjken (talk | contribs) (Problem 16)

Problem 16

Minh enters the numbers $1$ through $81$ into the cells of a $9 \times 9$ grid in some order. She calculates the product of the numbers in each row and column. What is the least number of rows and columns that could have a product divisible by $3$?

Solution

These are just left here for future conveniency.

Video Solution 1 (easy to digest) by Power Solve

https://youtu.be/zxkL4c316vg