In the following question the mathematical number follow according to a pattern. Discover that pattern and then pick up the missing number from the answer choices:

2, 5, 9, 19, 37, ?

Identify the next number in the series :- 9, 8, 8, 8, 7, 8, 6, ?

Which will be the next number in the following series? 1, 8, 27, 64…  

Find the missing number : 3,5,9,17,33, --------

The missing number in the series : 5,10,16,......., 31 is

Find the missing number in the given series : 11,33,55,-----,99.