Correct Answer - Option 3 : UX

Here, the pattern is -

First letter of the next term = Last letter of the previous term + 1 = F(6) + 1 = 7(G)

First letter of the next term = Last letter of the previous term + 1 = J(10) + 1 = 11(K)

First letter of the next term = Last letter of the previous term + 1 = M(13) + 1 = 14(N)

First letter of the next term = Last letter of the previous term + 1 = Q(17) + 1 = 18(R)

Following same pattern, next term is-

First letter of the next term = Last letter of the previous term + 1 = T(20) + 1 = 21(U)

And U(21) + 3 = 24(X), UX

Thus,** UX** will complete the given series.