Question

show that n^2 + n is divisible by 2 for any positive integer​

Answer 1

the answer must be 2

Answer 2

Answer:

Step-by-step explanation:

n and n + 1 are 2 consecutive natural numbers, thus exactly One of them is divisible by 2, this means that the product of n and n + 1 , namely n(n + 1) is divisible by 2 and hence

n^2 + n is divisible by 2.