Logical deduction Archives

1. Statements : All trains are buses. No room is bus. All boats are rooms. Conclusions : I. No boat is train. II. No bus is boat. III. No train is room.

None follows

Only I and II follow

Only II and III follow

Only I and III follow E. All follow

Detailed SolutionStatements : All trains are buses. No room is bus. All boats are rooms. Conclusions : I. No boat is train. II. No bus is boat. III. No train is room.

2. Statements : No man is a donkey. Rahul is a man. Conclusions : I. Rahul is not a donkey. II. All men are not Rahul.

Only conclusion I follows

Only conclusion II follows

Either I or II follows

Neither I nor II follows E. Both I and II follow

Detailed SolutionStatements : No man is a donkey. Rahul is a man. Conclusions : I. Rahul is not a donkey. II. All men are not Rahul.

3. Statements : Some papers are pens. Angle is a paper. Conclusions : I. Angle is not a pen. II. Angle is a pen.

Only conclusion I follows

Only conclusion II follows

Either I or II follows

Neither I nor II follows E. Both I and II follow

Detailed SolutionStatements : Some papers are pens. Angle is a paper. Conclusions : I. Angle is not a pen. II. Angle is a pen.

4. Statements : All hill stations have a sun-set point. X is a hill station. Conclusions : I. X has a sun-set point. II. Places other than hill stations do not have sun-set points.

Only conclusion I follows

Only conclusion II follows

Either I or II follows

Neither I nor II follows E. Both I and II follow

Detailed SolutionStatements : All hill stations have a sun-set point. X is a hill station. Conclusions : I. X has a sun-set point. II. Places other than hill stations do not have sun-set points.

5. Statements : No magazine is cap. All caps are cameras. Conclusions : I. No camera is magazine. II. Some cameras are magazines.

Only conclusion I follows

Only conclusion II follows

Either I or II follows

Neither I nor II follows E. Both I and II follow

Detailed SolutionStatements : No magazine is cap. All caps are cameras. Conclusions : I. No camera is magazine. II. Some cameras are magazines.

6. Statements : Some tables are TVs. Some TVs are radios. Conclusions : I. Some tables are radios. II. Some radios are tables. III. All radios are TVs. IV. All TVs are tables.

None follows

All follow

Only I and III follow

Only II and IV follow E. Only I and IV follow

Detailed SolutionStatements : Some tables are TVs. Some TVs are radios. Conclusions : I. Some tables are radios. II. Some radios are tables. III. All radios are TVs. IV. All TVs are tables.

7. Statements : All pens are chalks. All chairs are chalks. Conclusions : I. Some pens are chairs. II. Some chalks are pens.

Only conclusion I follows

Only conclusion II follows

Either I or II follows

Neither I nor II follows E. Both I and II follow

Detailed SolutionStatements : All pens are chalks. All chairs are chalks. Conclusions : I. Some pens are chairs. II. Some chalks are pens.

8. Statements : All fish are tortoise. No tortoise is a crocodile. Conclusions : I. No crocodile is a fish. II. No fish is a crocodile.

Only conclusion I follows

Only conclusion II follows

Either I or II follows

Neither I nor II follows E. Both I and II follow

Detailed SolutionStatements : All fish are tortoise. No tortoise is a crocodile. Conclusions : I. No crocodile is a fish. II. No fish is a crocodile.

9. Statements : No gentleman is poor. All gentlemen are rich. Conclusions : I. No poor man is rich. II. No rich man is poor.

Only conclusion I follows

Only conclusion II follows

Either I or II follows

Neither I nor II follows E. Both I and II follow

Detailed SolutionStatements : No gentleman is poor. All gentlemen are rich. Conclusions : I. No poor man is rich. II. No rich man is poor.

10. Statements : All educated people read newspapers. Rahul does not read newspaper. Conclusions : I. Rahul is not educated. II. Reading newspaper is not essential to be educated.

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Either I or II follows

Neither I nor II follows E. Both I and II follow

Detailed SolutionStatements : All educated people read newspapers. Rahul does not read newspaper. Conclusions : I. Rahul is not educated. II. Reading newspaper is not essential to be educated.