Invalid Argument/Examples

Examples of Invalid Arguments

Socrates is Mortal

This argument is technically invalid:

Socrates is a man.

Therefore, Socrates is mortal.

Moon is Yellow

This argument is invalid:

The moon is yellow.

Therefore, the moon is made of cheese.

I am Not Famous

The following is an invalid argument with true premises and a true conclusion:

If I am President then I am famous.

I am not President.

Therefore I am not famous.

Rockefeller was Not Famous

The following is an valid argument with true premises and a false conclusion:

If Nelson Rockefeller was President then he was famous.

Nelson Rockefeller was not President.

Therefore Nelson Rockefeller was not famous.