Select the correct alphabet number that is missing in the alphabet-number series given below:

NAJ$31$, BEF$28,$ RAM$31$, ?, YAM$31$

Find the correct group of letters in place of '?' in the following series.

FNHLJ, WOUQS, BNEKH, ?, DTHPL

Certain blank spaces are left in the following sequence. Which is the group of letters given below, will complete the sequence?

c_bba_cab_ac_ab_ac

Select the missing numbers in the following sequence $3,6, 24, 30, 63, 72, ?, ?, 195,210$.

Find the number that does not belong to the group:

$111,331, 482,551, 263,383, 362, 284$

A letter number series is given with one or more terms missing as shown below. Choose the alternative next in the sequence.

A$4$X, D$9$U, G$16$R, 

Complete the series IN

D$3$Y$104$, G$9$U$91$, J$27078$, M$8$IM$65,$

In the following sequence, one number is wrong. Find the wrong number.

$9,23,51,106,219,643$

What comes next in the following sequence in the codes?

$1218199, 1006480, 814963, 643648$