Divisibility Rule

We use the technique in 5 or 6th classes. Or we can use any competative exam.  we can save the time of using divisibility rule. In this rule we using 2 to 11 tables without using division method. In each table we use some technique for example

1. we use 2nd table the last digit must be even number.
2. We use 3rd table the sum of all digits is multiplied by 3.
3. We use 4th table the last 2 digits is multiply by 4.
4. We use 5th table the last digit must be 0 or 5.
5. We use 6th table the number should be divided by 2 or 3 table 
6. We use 7th table the last number must be doubled.the remaining number should be subtracted the double number the remaining number is divisible by 7
7. We use 8th table the last 3 digits must be divisible by 8
8. We use 9th table the sum of all the digits is multiplied by 9
9. We use 10th table the ending digit must be 0.
10. We use 11th table difference between even number and odd number is multiply by 11th table.