In each of these questions, choose the missing term(s) out of the given alternatives.
Looking at the elements outside the table, we see the following pattern.
A+4 = E
E+4 = I
I+4 = M
..
..
..
S+4 = W
W+4 = A
Also, if you look at the first column,
81+39-15 = 105
Second column = 18+93-51 = 60
Third column = 62+63-45 = 80
Hence, A and 80