A number is divisible by 5 if its last digit is either 0 or 5. This means that if the last digit of a number is 0 or 5, the number can be divided by 5 without leaving any remainder.
Examples:
- 10, 25, 50, 100, 105 are all divisible by 5 because their last digits are 0 or 5.
- 12, 34, 67, 89 are not divisible by 5 because their last digits are not 0 or 5.
This rule is easy to remember and apply, making it a useful tool for quickly determining whether a number is divisible by 5.
