Select the combination of letters that when sequentially placed in the gaps of the given letters series will complete the series.
b_bab_bc_abbb_ba_b

Select the term that will come in the place of?

7, 11, 19, 31, ?  67

20, 21, 19, 16, 17, 13, 14, 11, ?

Direction: In the following question, select the missing number from the given series.
7, 10, 14, 19, 25, ?

Pick an odd number in the given number series?

4 12 38 87 198

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

380, 645, 557, 656, 762, 875, ?

In the following question, select the missing number from the given series.
1, 7, 3, 9, 6, 12, 10, 16, 15, ?