Check whether 6n can end with the digit 0 for any natural number n.
If any digit has the last digit 10 that means it divisible by 10.
The factor of 10=2×5,
So value of 6n should be divisible by 2 and 5.
Both 6n is divisible by 2 but not divisible by 5.
So, it can not end with 0.