What will be the right answer for this?

Question

What is the probability that 4^th power of an integer chosen randomly ends with the digit 6.

Answer 1

The final digit of any power of an integer relies solely on the final digit of the original integer itself.

We have the following:

Since each final digit of the original integer is equally likely, the probability that the fourth power of a randomly selected integer being 6 will be 

#of choices that lead to final digit being 6 / #of choices regardless = 4/10 = 40 % 

Comments

Can you just explain the above table in detail