Final answer:
To determine divisibility by 2, check if the last digit is even. To determine divisibility by 3 or 9, check if the sum of the digits is divisible by 3 or 9. To determine divisibility by 5 or 10, check if the last digit is 0 or 5.
Step-by-step explanation:
To determine whether a number is divisible by 2, we check if the number is even. If the last digit is 0, 2, 4, 6, or 8, then the number is divisible by 2.
To determine whether a number is divisible by 3, we add up all the digits of the number. If the sum is divisible by 3, then the number is divisible by 3.
To determine whether a number is divisible by 5, we check if the last digit is 0 or 5. If it is, then the number is divisible by 5.
To determine whether a number is divisible by 6, we need to check if it is divisible by both 2 and 3.
To determine whether a number is divisible by 9, we add up all the digits of the number. If the sum is divisible by 9, then the number is divisible by 9.
To determine whether a number is divisible by 10, we check if the last digit is 0. If it is, then the number is divisible by 10.