divisibility rule for 10

Rule:
A number is divisible by 10,if its unit digit is 0.
Example1:
Is 567890 divisible by 10?
Solution:
The unit digit in the number 567890 is 0.
According to the rule given above,the number 567890 is divisible by 10.
Example2:
Is 782346 divisible by 10?
Solution:
The unit digit in the number 782346 is 6.
As per the rule given above,the number 782346 is not divisible by 10.