No headless horsemen are keen sighted riders. Therefore, no keen sighted riders are headless horsemen.
A) Invalid, illicit contrary.
B) Valid.
C) Invalid, illicit conversion.
D) Invalid, illicit contraposition.
E) Invalid, existential fallacy.
Correct Answer:
Verified
Q170: All A are non-B. (F) Obversion
A) No
Q171: Some reclusive gnomes are not playful sprites.
Q172: No A are non-B. (T) Contraposition
A) All
Q173: No uncooked vegetables are healthy vegetables. Therefore,
Q174: All proponents of globalization are individuals unconcerned
Q176: No A are B. (T) Some A
Q177: No non-A are non-B. (T) Contrary
A) All
Q178: Some non-A are B. (T) Subcontrary
A) All
Q179: No A are non-B. (F) No non-B
Q180: All non-A are B. (F) Contradictory
A) All
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