Check whether 6n can end with the digit 0 for any natural number n.

If any number has last digit 0,
Then,  it should be divisible by 10  
Factors of  10 = 2×5
So,
Value 6n should be divisible by 2 or 5
Prime factorisation of 6n = (2×3)n
Hence,
6n is divisible by 2 but not by 5.
It can not end with 0.