Verbal Reasoning - Mental Ability Questions

Choose the odd one from the following:

In the following question, select the related letters from the given alternatives.
ELQZ : AJOV : : VXTD : ?

Select the appropriate combination of mathematical operators to be sequentially placed between the numbers given on the left of the following equation so that LHS = RHS.

5035 = 20

Introducing a woman, a boy says, "She is the wife of my grandfather's son". How is the woman related to the boy?

In a certain code language "TITANIC" is written as "7371835" and "SEMATIC" is written as "6241735". How will "MAINTAIN" be written in that code language?

In the following question, select the odd letters from the given alternatives.

In a certain code language, 'x' represents '+', '÷' represents 'x', '-' represents '÷' and '+' represents '-'. Find out the answer to the following question.
 
15 x 4 ÷ 35 - 70 + 16 = ?

Pranav went 10 Km to the North. Then he turned West and covered 10 Km. Then he turned south and covered 5 Km. Finally, he turned to the East and covered 10 Km. In which direction he is from the starting point?