Select the combination of letters that when sequentially placed in the blanks of the given series, will complete the series.
DE_D_D_E_ _ED

A series is given with one term missing. Select the correct alternative from the given ones that will complete the series.
N, P, ?, U, X, Z, C, E, H

A series is given with one term missing. Select the correct alternative from the given ones that will complete the series.
NZ, PB, RE, TI, VN, XT, ?, BI

Find the missing term: AZY, BXW, CVU, DTS, ?, FPO.

What should come in place of the question mark (?) in the given series based on the English alphabetical order?
XZR, UWO, RTL, OQI, ?

What should come in place of the question mark (?) in the given series based on the English alphabetical order?
GBD, IDF, KFH, MHJ, ?

What should come in place of the question mark (?) in the given series based on the English alphabetical order?
U, ? , I , E, A.

What should come in place of the question mark (?) in the given series based on the English alphabetical order?
DNY, YIT, TDO, OYJ, ?