1) SAE
2) QAE
3) SAF
4) QAF
5) RAF
6) PAF
7) RAE
8) QAF
9) PAE
10) None of these
Solution
There are three series:
the first letter is formed by series that is formed by skipping one alphabet in backward direction
Second letter is constant
Third position is a simple series of A, B, C, D, E
RAE