Verbal Reasoning - Mental Ability Questions

If "#" means "subtraction", "&" means "division", "@" means "addition" and "%" means "multiplication", then 315&3#9@4%6 = ?

In these questions, the relationship between two elements is shown in the statements. These statements are followed by two conclusions.
Statement:
Z < L < W = N = K < A
Conclusion:
I. A > L
II. Z = A

Select the related letters from the given alternatives.
DFI : ACF :: OQT : ?

Select the odd word from the given alternatives.

Findout the odd word/letters/number/number pair from the given alternatives.

Two Person P an d Q ar e separ ated by a distan ce of 20 meterin west-east direction respectively. Now P and Q startwalking in north and south direction respectively and walkedfor 5 meter. Now P and Q took a right turn and walked 10meach . Now P an d Q took left tur n an d aft er walkin g 5 meterboth of them stopped. Find the distance between them

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

MN_NOM_OPM_OP_

Choose the related word/letters/number from the given alternatives.
Nest : Bird : : Den : ?