Show that one and only one out of n, n+2,n+4is divisible by 3 where n is any positive integer

Show that one and only one out of n, n+2,n+4is divisible by 3 where n

1.	Show that one and only one out of n, n+2,n+4is divisible by 3 where n is any positive integer
Answer» n=3q+r where 0 see cbse sample paper of this year in this app