Solved

All Flying Reindeer Are Happy Creatures

Question 260

Multiple Choice

All flying reindeer are happy creatures. Therefore, no flying reindeer are unhappy creatures.

A) Invalid, illicit obversion.
B) Invalid, existential fallacy.
C) Invalid, illicit contraposition.
D) Valid.
E) Invalid, illicit contrary.

Related Questions

Q255: In Categorical Proposition 1G, the predicate term

Q256: It is false that some two-hundred pound

Q257: Not all attorneys are successful. A) Some successful

Q258: No A are non-B. (T) Obversion A) No

Q259: No non-A are non-B. (F) No B

Q261: Categorical Proposition 1I Given the categorical proposition: "Some houseboats

Q262: All A are non-B. (F) Conversion A) All

Q263: Some A are non-B. (F) Some A

Q264: Some non-A are B. (F) Contradiction A) No

Q265: No S are P. (Boolean standpoint.) <img