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.
MN, PQ, TU, YZ, ?

The  following  questions  consist  of two  words  that  have  a  certain  relationship  to each   other,   followed   by   four   alternatives. Select  the  best  alternative  that  has  same relationship as the original pair of words

Stare : Glance

If 23@5=56; 6@7=26; 5@2=14; then what is the value of 7@5=?

Water :Ocean :: Snow : ?

Which one set of letters when sequentially placed at the gaps in the given letter series shall complete it?
H__JH__IJHHI__HH__JH

What should come in place of the question mark (?) in the following number series? 1, 3, 24, 360,8640, 302400, ?

A series is given, with one term missing. Choose the correct alternative from the given ones that will complete the series. NOM, QRP, TUS, ?

From the given words, select the word which cannot be formed using the letters of the given word.
HUMBLING