### Question

For this exercise, the modulo operator is used to determine if the number is divisible by 10. Why does a `0`

result mean that the number is divisible?

### Answer

The modulo operator returns the remainder portion of a division operation. If one number is evenly divisible by another number, there will be no remainder. So, if the modulo operator returns a `0`

, then it means that the number is evenly divisible by 10.