Verbal Reasoning - Mental Ability Questions

If 6#30=5; 8#24=3; 7#28=4; then what is the value of 8#40=?

In the following question, select the related letters from the given alternatives.
KLMN : IJKL : : TUVW : ?

Rajiv is the brother of Arun. Sonia is the sister of Sunil. Arun is the son of Sonia. How is Rajiv related to Sunil?

In this question, some equations are solved on the basis of a certain system. On the same basis find out the correct answer from amongst the four alternatives for the unsolved equation.

462 = 551
398 = 487
856 = ?

In a certain code language, "FIRST" is written as "@#$!?" and "EYE" is written as "^*^". How is "TYRE" written in that code language?

If 8 θ 12 δ 6 = 60 and 13 θ 15 δ 11 = 74, then 18 θ 21 δ 15 = ?

Find the next in this series:
YC3, XF6, WI9, ........

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