5. (2 points) Determine whether the argument is valid or invalid. Give a reason for your decision. Write the name or draw the diagram that shows it is valid or invalid
If I am vaccinated, then I can fly to Germany.
If I can fly to Germany, then I can visit my brother.
Therefore, if I am not vaccinated, then I cannot visit my brother.


6. (2 points) Draw an Euler diagram to determine whether the following argument is valid or invalid. State that it is valid or invalid.
All pilots have a pilot's license. .
All people who have a pilot's license can fly an airplane.
Therefore, all pilots can fly an airplane.