1. Show that the following argument is invalid by writing outits logical form and substituting new terms that demonstrate itsinvalidity.
Some policemen are handsome
Some nurses are not handsome
Some policemen are nurses
2.Show that the following argument is invalid by writing out itslogical form and substituting terms that demonstrate itsinvalidity.
All planets are comets
All comets are stars
All stars are planets
3. Explain why the following argument is invaliddirectly (in other words, do not identify its logical formor create a new argument, but think of a specific counterexample tothis argument):
Book A has less than 50 pages
Book B has less than 100 pages
Book A has less pages than Book B
4. Explain why the following argument is invaliddirectly:
Frank’s favorite food is a fruit
Frank’s favorite food is yellow
Frank’s favorite food is a banana
5. Explain why the following argument is invaliddirectly:
Speedy is the name of something that can fly
Speedy has wings
Speedy is abird
