Question

Show that 9n can never end with digit zero for any natural number n

Answer 1

by fundamental theorem of arithmetic
no. ending with 0 should have (2×5)^n as its factor
since 9^n=(3×3)^n
it doesn't have (2×5)^n as its factor
hence 9^n can never end with 0
H.P.

Answer 2

Answer:

her is ur answer in the pic