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Problem 16 (2024 AMC 8)

AMC 8Normal

From module Arithmetic and Number Theory Basics

Problem

Minh enters the numbers from 11 to 8181 in a 9×99 \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 33?

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