Gk

This question has two answers... 2n will always be even. But, n+2 will always be even since all even numbers are multiples of 2. And all multiples of 2 are even

If $n$ is an integer than $2n$ will be a multiple of $2$ regardless of whether the original number was even or odd.

If you can multiply something by 2, it means you can also divide it by 2. Therefore, 2n is always even.

if any number is multiply by any even number then its become even number & 2 is even

A number is even if it's a multiple of 2. $2n$ reprepresents all the multiples of two.