which set of quantum unmber is not allowed ?

Which of the following sets of quantum numbers is not allowed.

The electron in an atom are designed by a set of quantum numbers labeled as n, l, m and s. b) Which of the following set of quantum numbers are not allowed?

The electrons in an atom are designated by a set of quantum numbers labelled as n,l,m and s. Which of the following set of quantum numbers are not allowed? n=2,1=1,m=0,s=-1//2

Which of the following set of quantum numbers is not valid ?

which set of quantum number si not possible ?