@@swrebekah6726 m can be any number between -L and L , here we got L = 2 , so m is any number between -2 and 2 , but they already gave it the question that it's minus two
If Quantum number( n ) is 3 Azhimurhal number( l ) is0,1,2( here l=1...according to the trick he tought.....it is d sub energy) Magnetic number( m ) is from -l to l+(-1,0,+1) Sus energy level is 3d.