Consider the numbers 8n, where n is a natural number. Check whether there is any value of n for which 8n ends with the digit zero.
For any number to have zero at the end, it should be multiplied with 5, 10 or by the multiples of 10.
In case of terms like xn, the value of x must contain zero or zeroes at the end otherwise it must have the factor of 5 or 10.
Here in 8, the factors of 8 are 2 alone.
It doesn't have 5 to make the two as 10.
Therefore, for 8n cannot end with the digit zero for n having any natural number.