Choose the term which will continue the following series :
P 3 C, R 5 F, T 8 I, V 12 L, ?

A. Y 17 O
B. X 17 M
C. X 17 O
D. X 16 O
Answer: C . X 17 O


Clearly, the first letters of the terms are alternate.
The sequence followed by the numbers is + 2, + 3, + 4, ... .
The last letter of each term is three steps ahead of the last letter of the preceding term.
Thus, the next term would be X 17 O.
Hence, the answer is (c).