What are the possible magnetic quantum numbers of silver?
Silver has electronic configuration as [Kr] 4d10 5s1 .
The s orbital ( 5s ) has only one electron. And the s orbital here has n = 5 (as it is in the fifth period) and l = 0 . 
The s orbital is symmetric in space (sphere) which has only one orientation and hence has no "different" orientations  each of which is represented by a particular value of ml. So ml can take only one value and that is 0.( If this was a p orbital which could take 3 different orientations, ml would take 3 values -> -1,0,1. In general an orbital with azimuthal quantum number l, ml would take 2l+1 values of ml  ranging from -l to +l )
The quantum number ms represents the spin. It can either be +1/2 or -1/2.
Hence ,  ml =  0 amd ms = +1/2 or -1/2.
Hope this helps!