Logical Reasoning

Logical Deduction - Section 4

Directions to Solve

In each of the following questions, three statements are given followed by four conclusions numbered I, II, III and IV. You have to take the given statements to be true even if they seem to be at variance with commonly known facts and then decide which of the given conclusions logically follows from the given statements disregarding commonly known facts.

11. 

Statements: Some pearls are stones. Some stones are diamonds. No diamond is a gem.

Conclusions:

I.   Some gems are pearls.

II.  Some gems are diamonds.

III. No gem is a diamond.

IV. No gem is a pearl.
A. Only I and II follow
B. Only III and IV follow
C. Only either I or IV and either II or III follow
D. Only III and either I or IV follow
E. None of these
12. 

Statements: No man is sky. No sky is road. Some men are roads.

Conclusions:

I.   No road is man.

II.  No road is sky.

III. Some skies are men.

IV. All roads are men.

A. None follows
B. Only I follows
C. Only II and III follow
D. Only I and III follow
E. None of these
13. 

Statements: All myths are fictions. No fiction is novel. All novels are stories.

Conclusions:

I.   No myth is novel.

II.  Some fictions are novels.

III. Some fictions are myths.

IV. Some myths are novels.

A. Only either I or II and both III and IV follow
B. Only either I or IV and II follow
C. Only either I or IV and both II and III follow
D. All follow
E. None of these
14. 

Statements: All rods are bricks. Some bricks are ropes. All ropes are doors.

Conclusions:

I.   Some rods are doors.

II.  Some doors are bricks.

III. Some rods are not doors.

IV. All doors are ropes.
A. Only I and II follow
B. Only I, II and III follow
C. Only either I or III, and II follow
D. Only either I or III, and IV follow
E. None of these
15. 

Statements: No paper is pen. No pen is pencil. All erasers are papers.

Conclusions:

I.   Some papers are erasers.

II.  No pencil is eraser.

III. No pen is eraser.

IV. All papers are erasers.
A. Only I and II follow
B. Only II and III follow
C. Only I, II and III follow
D. All follow
E. None of these
16. 

Statements: All doors are buses. All buses are leaves. No leaf is a flower.

Conclusions:

I.  No flower is a door.

II.  No flower is a bus.

III. Some leaves are doors.

IV. Some leaves are buses.
A. None follows
B. Only I and II follow
C. Only II and III follow
D. Only II, III and IV follow
E. All follow
17. 

Statements: All pencils are birds. All birds are skies. All skies are hills.

Conclusions:

I.   All pencils are hills.

II.  All hills are birds

III. All skies are pencils.

IV. All birds are hills.
A. Only I and II follow
B. Only I and III follow
C. Only III and IV follow
D. All follow
E. None of these
18. 

Statements: Some tigers are lions. Some lions are rabbits. Some rabbits are horses.

Conclusions:

I.   Some tigers are horses.

II.  Some rabbits are tigers.

III. Some horses are lions.

IV. All horses are rabbits.
A. All follow
B. None follows
C. Only I and II follow
D. Only II and IV follow
E. Only IV follows
19. 

Statements: All oceans are rivers. Some springs are rivers. All wells are springs.

Conclusions:

I.   Some springs are oceans.

II.  Some wells are rivers.

III. Some rivers are oceans.

IV. No well is river.
A. None follows
B. Only either I or III, and IV follow
C. Only either II or IV, and III follow
D. All follow
E. Only either II or IV, and I follow
20. 

Statements: Some spoons are bowls. All bowls are knives. All knives are forks.

Conclusions:

I.   All spoons are forks.

II.  All bowls are forks.

III. Some knives are bowls.

IV. Some forks are spoons.
A. Only II and III follow
B. Only II and IV follow
C. Only III and IV follow
D. All follow
E. None of these

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Exercise