Verbal Reasoning - Mental Ability Questions

Select the related word/letters/number from the given alternatives.
DB: IC:: YE: ?

In a certain code language, '+' represents 'x', '-' represents '+', 'x' represents '÷' and '÷' represents '-'. What is the answer to the following question?

27 x 3 ÷ 30 + 5 - 125 = ?

A compass is incorrectly aligned. For the direction of west, it is showing south­west. Which direction will it show for north?

If 4 x 9 x 3 = 4 and 5 x 3 x 1 = 3, then
9 x 9 x 7 = ?

Q is P's sister. R is P's mother. M is Mrs. R's father. How is Q's father related to M?

In a certain code language, "HAMMER" is written as "MAHERM". How is "MATTER" written in that code language?

In the following question, select the related number from the given alternatives.
7 : 48 : : 11 : ?

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

XFB,UGD ,RIG ,OLK, ?