Verbal Reasoning - Mental Ability Questions

In the following question, select the related word pair from the given alternatives.

Grandmother : Female : : ? : ?

Select the related number from the given alternatives.
-3/7 : 7/3 :: 9/2 : ?

Find the missing number?

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

54 x 9 - 3 ÷ 4 = ?

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

Responsibility

Find the odd word/letters/number pair from the given alternatives.

In the following question, select the odd word pair from the given alternatives.

Consider the given statement/s to be true and decide which of the given conclusions/assumptions can definitely be drawn from the given statement.
Statements:
1. All cycles are ducks.
2. All ducks are swans.
Conclusions:
I. All swans are cycles.
II. Some swans are cycles.