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

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

What will be the next number in the following series of numbers 13, 16, 22, 31, ...?

What will be the next number in the following series of numbers 2, 5, 7, 12, 19....?

Next number in the series 6, 13, 21, 30, 40, 51, 63, ........