Number Series Questions

Select the missing number from the given responses:

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

72, 65.7, ? , 53.1, 46.8

In the following question, select the missing number from the given series.
9, 18, 72, 576, ?

In the following question, select the missing number from the given series.
7, 19, 42, 87, ?

In the following question, select the missing number from the given series.
19, 38, ?, 228, 684, 1368

What will come in place of the question marks (?) in the following Number series?8, 14, 26, 44, 68 (?)

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

111, 107.5, 104, ? , 97, 93.5

In the following question, select the missing number from the given series.
3, 7, 16, 35, ?