Number Series Questions

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

23, 19, 15, 11, ?

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

11, 13, 16, 18, 21, ?

Select the number missing from the given sequence.

1, 2, 6, ___, 120, 720

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

25, 33, 42, 52, 63, ?

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

23, 29, 24, 30, 25, ?

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

23, 24, 26, 27, 29, ?

Choose the correct alternative that will continue the same pattern and replace 'x' in series 4,9,25,x,121,169,289,361