Question

If marcus likes pizza then he likes beer. if marcus likes beer then he does not like herring. if marcus likes pizza then he likes herring. marcus likes pizza. therefore he likes herring pizza.

Answer 1

If Marcus likes pizza, then he likes beer   (p→q)

If Marcus likes beer, then he does not like herring    (q→~r)

If Marcus likes pizza, then he likes herring   (p→r)

False: p→q→~r ≠ p→r