Division Tricks
Division Rule for 3
When sum of digit is divisible by 3 then a number is divisible by 3.
Examples:
Example 1: 345/3 = 115
Sum of digit = 3+4+5=12,which is divisible by 3.Hence given number is divisible by 3.
Example 2: 4287/3 = 1429
Sum of digit = 4+2+8+7=21,which is divisible by 3.Hence given number is divisible by 3.