If n is used to represent any natural number, then even numbers can be represented by 2n, and odd numbers can be represented by 2n______ Express

If n is used to represent any natural number, then even numbers can be represented by 2n, and odd numbers can be represented by 2n______ Express

From the analysis, we know that: if n is used to represent any natural number, even number can be represented by 2n, then odd number can be represented by 2n + 1; so the answer is: 2n + 1