Question

check whether 15n can end with zero.

Answer 1

Yes, 15n can end with 0 when n = 0 or n = Any even number.

15n = 15 (0) = 0.

15n = 15 (2) = 30.
15n = 15 (6) = 90.

:)

Answer 2

given 15n
if n is any. even integer
15n end with zero

i) if n=0 then 15*0=0
ii)if n= 2 then 15n =15*2=30
iii) if n=4 then 15n =15*4=60