Question

show that 9 power n can not be end with digit 0 for any natural number n.....

'__ye irrevelent answer kahi aur pr plss..__​

Answer 1

9n can never end with the digit 0 for any natural number n because for a number to end with zero it should be divisible by 10 and therefore its factors should be 5 and 2. But as 9 has only 3 as its factor, increasing its power will not make 5 as its factor. Thus it can never end with 0.