Verbal Reasoning - Mental Ability Questions

A series is given with one term missing. Select the correct alternative from the given ones that will complete the series.

A, D, H, M, ?

Which set of letters when sequentially placed at the gaps in the given letter series shall complete it?

AB_AB_AA_BB_

A series is given with one term missing. Select the correct alternative from the given ones that will complete the series.

BM, FQ, JU, ?, RC

A series is given with one term missing. Select the correct alternative from the given ones that will complete the series.

SH, QJ, OL, ?, KP

A series is given with one term missing. Choose the correct alternative from the given ones that will complete the series.
DAF, FED, HIB, ?

A series is given with one term missing. Select the correct alternative from the given ones that will complete the series.

AZ, BY, CX, DW, ?

If 'P' means 'divided by', 'T' means 'add', 'M' means 'subtract' and 'D' means 'multiplied by', then what will be the value of the following expression?

12 M 12 D 28 P 7 T 15

Select the missing number from the given options?