Question

so that one and only one out of name and place to a place where is divisible by 3 where n is a positive integer​

Answer 1

Answer:

⇒ n + 4 = 3q + 2 + 4 = 3q + 6 = 3(q + 2) is divisible by 3. Thus one and only one out of n , n+2, n+4 is divisible by 3.