Verbal Reasoning - Mental Ability Questions

If 9&4 = 50, 3&7 = -40 and 7&5 = 20, then find the value of 4&5 = ?

Select the related word/letters/number from the given alternatives.

523 : 325 : : 603 : ?

In the following question, select the related number from the given alternatives.

36 : 9 : : 49 : ?

Select the related word/letters/numbers from the given alternatives:

9 : 25 :: 49 : ?

Select the related word/letters/number from the given alternatives.

545 : 196 :: 173 : ?

Select the related word/letters/number from the given alternatives.

SPINSTER : ROHMRSDQ : : SEMESTER : ?

Select the related word/letters/numbers from the given alternatives:

Accomodation : Rent :: Journey : ?

Select the related word/letters/number from the given alternatives.

Honest : Truthful : : Obdurate : ?