Complete the series :

20, 33, 48, 65, 84, ......

Select the term that will come next in the following series.

FBA, IGE, LLI, OQM, ?

What will come in place of the question mark in the following numerical series?

6, 9, 14, 21, 30, ?

What will replace '?' in the following alphanumeric series?

C2X, G3T, K5P, O7L, ?, W13D

In the given letter series, some of the letters are missing which are given in that order as one of the following alternatives. Choose the correct alternative.

_a_b_abaa_bab_abb

Select the missing number from the below options.

28	18	50
17	13	11
31	22	?

Find the missing number from the given alternatives.