Possible states?

Question

According to the quantum mechanical model of hydrogen atom, if the orbital quantum number = 5, how many possible states will be permitted?

Answer 1

I tried. But i am in the state of "confusion." %})

Answer 2

If the orbital angular momentum is 5 h-bar, then the z-component of orbital angular momentum can run from minus 5 h-bar to plus 5 h-bar--eleven possibilities.

And you can put 2 electrons--spin up and spin down in each spatial state.