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.

1. 

Statements: All jungles are buses. All books are buses. All fruits are books.

Conclusions:

I.   Some fruits are jungles.

II.  Some buses are books.

III. Some buses are jungles.

IV. All fruits are buses.
A. Only I, II and III follow
B. Only I, II and IV follow
C. Only II, III and IV follow
D. All follow
E. None of these
2. 

Statements: All buildings are windows. No toys is building. Some tigers are toys.

Conclusions:

I.   Some tigers are buildings.

II.  Some windows are tigers.

III. All toys are tigers.

IV. Some windows are toys.
A. None follows
B. Only I and II follow
C. Only III and IV follow
D. Only I and III follow
E. All follow
3. 

Statements: No table is fruit. No fruit is window. All windows are chairs.

Conclusions:

I.   No window is table.

II.  No chair is fruit.

III. No chair is table.

IV. All chairs are windows.
A. None follows
B. Only I and II follow
C. Only III and IV follow
D. All follow
E. None of these
4. 

Statements: Some papers are cats. All cats are bats. No bat is horse.

Conclusions:

I.   Some papers are horses.

II.  No horse is cat.

III. Some bats are papers.

IV. All papers are bats.
A. Only I and II follow
B. Only II and III follow
C. Only III and IV follow
D. Only I and IV follow
E. All follow
5. 

Statements: Some tapes are discs. Some discs are cassettes. Some cassettes are songs.

Conclusions:

I.   Some songs are discs.

II.  Some cassettes are tapes.

III. Some songs are tapes.

IV. No song is a disc.
A. Only either I or IV follows
B. Only either II or IV follows
C. Only III and IV follow
D. Only III and either II or IV follows
E. None of these
6. 

Statements: All benches are desks. Some desks are roads. All roads are pillars.

Conclusions:

I.   Some pillars are benches.

II.  Some pillars are desks.

III. Some roads are benches.

IV. No pillar is bench.
A. None follows
B. Only either I or IV, and III follow
C. Only either I or IV follows
D. Only either I or IV, and II follow
E. All follow
7. 

Statements: Some trains are roads. No road is jungle. All flowers are jungles.

Conclusions:

I.   Some trains are flowers.

II.  Some trains are jungles.

III. Some flowers are trains.

IV. No road is flower.
A. None follows
B. Only II follows
C. Only III follows
D. Only IV follows
E. All follow
8. 

Statements: Some bricks are trees. All trees are pens. All pens are boats.

Conclusions:

I.   Some boats are bricks.

II.  Some pens are bricks.

III. Some trees are bricks.

IV. Some bricks are boats.
A. Only I and II follow
B. Only III and IV follow
C. None follows
D. All follow
E. None of these
9. 

Statements: All cups are glasses. Some glasses are bowls. No bowl is a plate.

Conclusions:

I.   No cup is a plate.

II.  No glass is a plate.

III. Some plates are bowls.

IV. Some cups are not glasses.
A. None follows
B. Only either I or III follows
C. Only II and III follow
D. Only III and IV follow
E. None of these
10. 

Statements: Some dogs are rats. All rats are trees. Some trees are not dogs.

Conclusions:

I.   Some trees are dogs.

II.  All dogs are trees.

III. All rats are dogs.

IV. No tree is dog.
A. None follows
B. Only I follows
C. Only I and II follow
D. Only II and III follow
E. All follow

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Exercise