## Logical Exercises (1)

Brief guide to your logical competence

Please answer the following question in all seven arguments below:

Question 1: Is this a VALID argument? If yes, why?

Please remember that, the truth value of the premises and the conclusion is not relevant in deciding the validity of an argument. A VALID argument is one in which the conclusion follows the premises.

Argument type 7:

Cats are birds.

Tigers are birds.

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Therefore, tigers are cats.

Argument type 3:

Cats are mammals.

Tigers are mammals.

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Therefore, tigers are cats.

Argument type 4:

Dogs are cats.

Cats are birds.

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Therefore, dogs are birds.

Argument type 5:

Cats are birds.

Dogs are birds.

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Therefore, dogs are cats.

Argument type 6:

Cats are birds.

Birds are mammals.

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Therefore, cats are mammals.

Argument type 2:

Cats are mammals.

Tigers are cats.

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Therefore, tigers are mammals.

Argument type 1:

Cats are mammals.

Dogs are mammals.

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Therefore, dogs are cats.