In following question, a sequence is given, with one term missing. Choose the correct alternative from the given ones that will complete the series.
7, 12, 22, 42, 82, ?

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

Which is the number that comes next in the following sequence?
4, 6, 12, 14, 28, 30, ?

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

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

JI, LK, NM, ? 

6, 42, ?,  1260, 5040, 15120, 30240

In each of the following questions, a sequence is given, with one term missing. Choose the correct alternative from the given ones that will complete the series.
2, 3, 5, 9, 17, ?

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