10.3n is an odd number, which of the following represents an even

number?

2n and n + 1 are even if n is odd.

20 * (10.3) * n is even if (10.3) n is odd.

Step-by-step explanation:

Are you talking about the expression 10.3n or simply n?

If n is an odd number then n+1 is even

2*n is even