Verbal Reasoning - Mental Ability Questions

A series is given with one term missing. Choose the correct alternative from the given ones that will complete the series. TP, UQ, WS, ZV, ?

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

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

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 = ?

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

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