Number Series Questions

In the following question, select the missing number from the given series.

52, 41, 32, 25, ?, 17

In the following question, select the missing number from the given series.

1161, 1164, 1168, 1173, 1179, ?

In the following question, select the missing number from the given series.

101, 97, 93, 89, ?, 81

Select the number missing from the given series.

15, 20, 18, 23, ?, 26, 24

In the following question, select the missing number from the given series.

119, 121, 124, 128, ?, 139

In the following question, select the missing number from the given series.

23, 24, 26, 27, 29, ?

In the following question, select the missing number from the given series.
19, 26, 45, 71, 116, ?

In the following question, select the missing number from the given series.
19, 11, 13, 16, 15, 17, 13, 19, 21, ?