This document provides divisibility rules for numbers: - A number is divisible by 2 if the last digit is even. - A number is divisible by 5 if it ends in 0 or 5. - A number is divisible by 10 if it ends in 0. - To check if a number is divisible by 3, add the digits and check if the sum is divisible by 3. - To check if a number is divisible by 6, check if it is divisible by both 2 and 3. - To check if a number is divisible by 9, add the digits and check if the sum is divisible by 9.