[M9-PRACTICE EXERCISES] Hypothetical Syllogisms

Is this conditional syllogism VALID or INVALID?

If a man can improve his performance, then he is capable of progress.

But, man can evaluate and improve his performance.

Therefore, man is capable of progress.

 

Valid

Invalid

Valid

Is this conditional syllogism VALID or INVALID?

If you take a bath, you will feel clean.

You did not feel clean.

Therefore, you did not take a bath.

 

Valid

Invalid

Valid

Is this conditional syllogism VALID or INVALID?

If you are sick, then you cannot go swimming.

You can go swimming.

Therefore, you are not sick.

 

Valid

Invalid

Valid

Is this conditional syllogism VALID or INVALID?

Since Luigi is late, he cannot take the test.

Luigi is late.

Therefore, he cannot take the test.

 

Valid

Invalid

Valid

Is this disjunctive syllogism VALID or INVALID?

Today is either Monday or Sunday.

But it is not Monday.

Therefore, it is Sunday.

 

Valid

Invalid

Invalid

Is this disjunctive syllogism VALID or INVALID?

His statement is either true or false.

But it is false.

Therefore, it is not true.

 

Valid

Invalid

Valid

Is this disjunctive syllogism VALID or INVALID?

It is either seven or eight o’clock in the evening.

But it is not seven o’clock.

Therefore, it is eight o’clock.

 

Valid

Invalid

Invalid

Is this conjunctive syllogism VALID or INVALID?

You cannot be both soldier and sailor.

But you are not a soldier.

Therefore, you are a sailor.

 

Valid

Invalid

Invalid

Is this conjunctive syllogism VALID or INVALID?

You cannot be married and be a bachelor at the same time.

But Sabas is married.

Therefore, he cannot be bachelor.

 

Valid

Invalid

Valid

Is this conjunctive syllogism VALID or INVALID?

An individual cannot be in Quezon City and in Makati at the same time.

But Flavio is not in Makati.

Therefore, he is Quezon City.

Valid

Invalid

Invalid