Concept:Each term has three parts: a letter with a fixed jump, a number following increasing differences, and another letter with a fixed jump.Explanation:First letters: P,R,T,V are +2 steps each.Next first letter = V+2=X.Numbers: 3,5,8,12 increase by +2,+3,+4.So next difference is +5, giving 12+5=17.Second letters: C,F,I,L are +3 steps each.Next second letter = L+3=O.Thus, the missing term is X17O.