Verbal Reasoning - Mental Ability Questions

In a certain code language, '-' represents '+', '+' represents 'x', 'x' represents '÷' and '÷' represents '-'. Find out the answer to the following question.

3 ÷ 12 - 40 + 5 x 20 = ?

Introducing Reeta, Monica said, "She is the only daughter of my father's only daughter." How is Monica related to Reeta?

In the following question, select the related number from the given alternatives.
AKP : 1121256 : : LNO : ?

If SWEET is written as XAHGU, then HORSE is

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

CD, ? , MN, UV, EF

In the following question, select the related letters from the given alternatives.
PRAG : QTDK : : STOP : ?

If 4!4 = 80, 3!8 = 110 and 6!2 = 80, then find the value of 7!9 = ?

In the following question, select the related word pair from the given alternatives.
Canada : Ottawa : : ? : ?