Statement :
All duster is chalk.
All blackboard is chalk.
Conclusion:
I. Some duster are blackboard.
II. some chalk are duster.

In the following question below are given some statements followed by some conclusions. Taking the given statements to be true even if they seem to be at variance from commonly known facts, read all the conclusions and then decide which the given conclusion logically follows the given statements. 

Statements: 

Some schools are Laboratories. 

All Laboratories are theatres. 

Conclusion: 

I. Some theatres are schools. 

II. No school is a theatre. 

Statements: 

All cups are plates. 

Some plates are glass. 

Conclusions: 

I. Some glasses are cups. 

II. All glasses are cups. 

Statement: 

Some boys are hardworking. 

No intelligent are boys. 

Conclusion 

I. Some hardworking are not intelligent 

II. All hardworking are intelligent. 

III. Some intelligent are not hardworking 

Statement: 

All insects are dangerous. 

All machines are dangerous. 

Conclusion 

I. All dangerous are insects. 

II. All dangerous are machines. 

III. Some machines are insects. 

Statement: 

Some wilds are carnivores.

All wild are lions. 

Conclusion: 

I. All carnivores are lions. 

II. Some lions are carnivores.

Statements: 

Some pens are pencils. 

All pencils are erasers. 

Conclusions: 

I. Some pens are erasers. 

II. No pens are erasers. 

III. Some erasers are pencil 

Statements: 

Creative persons are learned people. 

Some doctors are creative persons.

Conclusion: 

I. Some creative persons are learned people. 

II. Some learned people are doctors.