Question

5.
Show that one and only one out of n, n+2 or n +4 is divisible by 3, where n is any
positive integer.

Answer 1

Answer:

( 0,1,2,3,4 )

n + 0

n + 1

n + 2

n + 3

n + 4

positive integer

n, n + 2, n + 4