A number is divisible by
2 - If the last digit is even (0,2,4,6,8)
3 - If the sum of the digits is divisible by 3
4 - If the last 2 digits are divisible by 4
5 - If the last digit is 0 or 5
6 - If the number is divisible by both 2 and 3
7 - If you double the last digit and subtract it from the rest of the number and the answer is:
9 - The sum of the digits is divisible by 9
10 - The number ends in 0
11 - If you sum every second digit and then subtract all other digits and the answer is:
2 - If the last digit is even (0,2,4,6,8)
3 - If the sum of the digits is divisible by 3
4 - If the last 2 digits are divisible by 4
5 - If the last digit is 0 or 5
6 - If the number is divisible by both 2 and 3
7 - If you double the last digit and subtract it from the rest of the number and the answer is:
- 0, or
- divisible by 7
9 - The sum of the digits is divisible by 9
10 - The number ends in 0
11 - If you sum every second digit and then subtract all other digits and the answer is:
- 0, or
- divisible by 11