Question

Check if 7n can end with digit 0 for any natural number

Answer 1

hey its 7 to the power n right.

so we see that 7 is a prime number hence it doesnt have any other factor except 1 and itself.

we can say that if a power has to end with 0 , the number has to have a factor 5 and 2 but here 7 doesnt have them . so we can say that 7 to the powern can never end with five (5).

hope you liked it.