The given expression is:

$7x^3 - 2x^2 + x$

Let's list the numerical coefficients of each term:

1. For $7x^3$, the coefficient is 7.
2. For $-2x^2$, the coefficient is -2.
3. For $x$ (which can be written as $1x$), the coefficient is 1.

So, the numerical coefficients are:

$7, -2, 1$

Would you like further details or explanations on this?

Here are five related questions to expand on this topic:

1. What is a coefficient in an algebraic expression?
2. How do you find the degree of a polynomial?
3. Can a term have no coefficient? What would it mean?
4. How do coefficients affect the shape of a graph of a polynomial function?
5. How do you combine like terms with different coefficients?

Tip: Always look for the sign in front of a term when identifying the coefficient—it determines whether it's positive or negative.