Alphabet Test Questions

In the following question, which one set of letters when sequentially placed at the gaps in the given letter series shall complete it ?
MN_O_NN_M_NO

A series is given, with one term missing. Choose the correct alternative from the given ones that will complete the series.

CDE, IHG, KLM, QPO, STU, ?

Which one set of letters when sequentially placed at the gaps in the given letter series shall complete it?

xy_kx_zk_yzk xyz_ _

A series is given, with one term missing. Choose the correct alternative from the given ones that will complete the series.

L, N, Q, S, V, ?

In the following question, from the given alternative words, select the word which cannot be formed using the letters of the given word.
Biological

A series is given with one term missing. Select the correct alternative from the given ones that will complete the series.

HVJ, NBP, THV, ZNB, ?

A series is given with one term missing. Select the correct alternative from the given ones that will complete the series. PR, VX, BD, ?

In the following question, which one set of letters when sequentially placed at the gaps in the given letter series shall complete it?

a_d_bd_ab_dd