Number Series Questions

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

14, 17, 21, 24, 28, 31, ?

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

101, 97, 93, 89, ?, 81

Find the missing number in the series.

75, 96, 116, 135, 153, ?

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

43, 58, 88, 133, ?, 268

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

831, 842, 853, 864, 875, ?

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

2, 4, 13, 41, 106, ?

Which number will complete the series?

11,13,17,19,23,25,_____