Question

Is there any number n for which 6n ends with the digit 0 ? Give reason in =17 .

Answer 1

If any number ends with the digit zero, it should be divisible by 10 or in other words, it will also divisible by 2 and 5 as 10=2×5.

prime factorisation of 6^n=(2×3)^n

It can be observed that 5 isn't in the prime factorisation of 6^n

Hence, for any value of n, 6^n will not be divisible by 5

Therefore 6^n can't end with the digit zero for any natural number n....

Answer 2

it's right yrrr ...........