Find the missing in the series NA PC RE TG XK ZM ........

General Intelligence and Reasoning (RRB NTPC) Alpha-Numeric Series

Find the missing (?) in the series

NA, PC, RE, TG, ?, XK, ZM

VII

N+2=P, P+2=R, R+2=T,
T+2=V,V+2=X, X+2=Z
Similarly, A+2=C, C+2=E, E+2=G,
G+2=I, I+2=K, K+2=M

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