Verbal Reasoning - Mental Ability Questions

In the following question, which one set of letters when sequentially placed at the gaps in the given letter series shall complete it?

_d_be_c_ed_b

MATHEMATICS is related to NUMBERS in the same way HISTORY is related to

If "S" denotes "multiplied by", "V" denotes "subtracted from", "M" denotes "added to" and "L" denotes "divided by", then

72 L 24 S 3 V 7 M 2 =?

From the given alternative words, select the word which cannot be formed using the letters of the given word:

LEGALIZATION

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

10, 22, 46, ?

In the following question, by using which mathematical operators will the expression become correct?
15 _ 3 _ 4 _ 20

From the given alternatives, select the word which CANNOT be formed using the letters of the given word.

Relinquished

In the following question, from the given alternative words, select the word which cannot be formed using the letters of the given word.
UNIFORMITY