Q) Can the number (8ⁿ), n being a natural number, end with the digit 0 ?

Ans: 

For any number to end with the digit 0, it will be divisible by 10

Since 10 = 2 x 5, therefore, a number ending with digit 0 will be divisible by 2 and 5 both.

Next, since factors of 8 are 2 and 4

Hence, for each value of n, 8ⁿ will be divisible by 2 and 4, but not by 5.

Therefore, 8ⁿ cannot end with the digit 0 for any natural number n.

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