Question

Check whether 15 (to the power) n can end with digit 0 for any natural number n.

Answer 1

(15)^n will only end with 5 but never with 0
When we raise it to any power the units place will always be 5 and 5*5=25
Even it ends with 5 and 25*5 also ends with 5

Answer 2

Answer:

Step-by-step explanation:

If the number 15n for any natural number (n) can end with digit zero ;then 2and 5 must be factor of 15 ie. 15 should be divisible by 2 and 5.but 15 has prime factor of 3 and 5 Only. So it never divisible by 2.Hence 15n can never end with digit zero. Hope it helps you!!!