2, 9, 30, ?, 436, 2195, 13182

20, 21, 19, 16, 17, 13, 14, 11, ?

. ____, 9, 25, 49, 121, 169

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

JI, LK, NM, ? 

Select the number from among the given options that can replace the question mark (?) in the following series. 

5, 18, 70, 278, ?

In the following question, select the figure from the given alternatives in place of the question mark.

4, 4, 8, 24, 96, 480, (?)

Complete the following number series.
24, 60, 120, 210___