2.51% of 800 - 3.97% of 250 = ?

Statements:

Few M are N.

Only N is O.

Some P is M.

Conclusions:

I). No M is O.

II). Some N are not M.

Statement-

1-Some clocks are watches.

2-Some watches are walls.

3-Some walls are houses.

4-Some houses are rooms.

Statements: 

Some nails are toes.

Some fingers are hands.

No hand is a nail.

Conclusions:

I. Some fingers are not nails.

II. All nails can be fingers.

Statements:Some doors are windows.

No window is a hole.

Conclusions:I. No hole is a door.

II. Some doors are holes.

Statements :No poem is a story

All stories are novels.

All novels are articles.

Conclusions :I. All articles are stories.

Statements:Some pencils are erasers.

All erasers are pens.

Some pens are sharpeners.

Conclusions:I. some sharpeners are erasers.

Statements:

Only a few player is team

Only a few team is sport

No sport is game

Conclusions:

Statements :

Only a few Harpic is Lizol.

Only a few Lizol is Detergent.

No Harpic is Pesticide.

Conclusion :

Statements:Some combs are boxes.

All boxes are mirrors.

Conclusions:I. Some boxes are combs. 

II. Some mirrors are combs.

Statement 

Only Pencils are Pen

Few Mobile are pencil

No Laptops are mobile.

Conclusion