divisibility rule for 4

Rule:
A number is divisible by 4,if the last two digits of the number is divisible by 4.
Example 1:
Is 567884 divisible by 4?
Solution:
The last two digits in the number 567884 is 84.
84 is divisible by 4 since 84/4=21.
According to the rule given above,the number 567884 is divisible by 4.
Example 2:
Is 782343 divisible by 4?
Solution:
The last two digits in the number 782343 is 43.
43 is not divisible by 4 since 43/4 leaves 3 as remainder.
As per the rule given above,the number 782343 is not divisible by 4.

divisibility rule for 3

Rule:
A number is divisible by 3,if the sum of its digits is divisible by 3.
Example 1:
Is 567894 divisible by 3?
Solution:
The sum of digits in the number 567894 is 39.
39 is divisible by 3 since 39/3=13.
According to the rule given above,the number 567894 is divisible by 3.
Example 2:
Is 782342 divisible by 3?
Solution:
The sum of digits in the number 782342 is 26.
26 is not divisible by 3 since 26/3 leaves 2 as remainder.
As per the rule given above,the number 782342 is not divisible by 3.

divisibility rule for 2

Rule:
A number is divisible by 2,if its unit’s digit is any of the digits 0,2,4,6,8.
Example 1:
Is 567894 divisible by 2?
Solution:
The unit digit in the number 567894 is 4.
According to the rule given above,the number 567894 is divisible by 2.
Example 2:
Is 782343 divisible by 2?
Solution:
The unit digit in the number 782343 is 3.
As per the rule given above,the number 782343 is not divisible by 2