28. Some gold watches are retirement gifts. Therefore, it is false that no gold watches are retirement gifts.
a. Invalid, illicit contrary.
b. Valid, no fallacy.
c. Invalid, illicit subcontrary.
d. Invalid, Illicit subalternation.
e. Invalid, illicit conversion.
29. It is false that all cowboys are romantic icons. Therefore, no cowboys are romantic icons.
a. Valid, no fallacy.
b. Invalid, illicit subalternation.
c. Invalid, illicit contrary.
d. Invalid, illicit conversion.
e. Invalid, existential fallacy.
30. Some flying horses are dependable steeds. Therefore, some dependable steeds are flying horses.
a. Invalid, existential fallacy.
b. Invalid, illicit conversion.
c. Invalid, illicit contrary.
d. Valid, no fallacy.
e. Invalid, illicit obversion.
31. It is false that no sunsets are glorious scenes. Therefore, it is false that some sunsets are not glorious scenes.
a. Invalid, illicit subalternation.
b. Invalid, illicit contraposition.
c. Valid, no fallacy.
d. Invalid, illicit subcontrary.
e. Invalid, illicit conversion.
32. It is false that some two-hundred pound mice are warthogs. Therefore, it is false that all two-hundred pound mice are
warthogs.
a. Invalid, illicit conversion.
b. Invalid, illicit subalternation.
c. Invalid, illicit subcontrary.
d. Valid, no fallacy.
e. Invalid, existential fallacy.
33. Some poets are sensitive souls. Therefore, some poets are not insensitive souls.
a. Invalid, illicit contraposition.
b. Invalid, illicit subcontrary.
c. Invalid, illicit subalternation.
d. Valid, no fallacy.