United's lowering fares is a sufficient and necessary condition for American's hiring pilots, given that Frontier does not improve service.
A) (U ≡ A) ⊃ ∼F
B) ∼F ⊃ (U ≡ A)
C) (∼F ⊃ U) • (∼F ⊃ A)
D) (∼F ≡ U) • (∼F ≡ A)
E) ∼F ≡ (U ⊃ A)
Correct Answer:
Verified
Q39: R Q40: ∼F ⊃ L Q41: Statement 1H Q42: Statement 1H Q43: Statement 2H Q45: Proposition 2H Q46: The wedge operator is used to translate: Q47: Frontier's improving service is a necessary condition Q48: American's hiring pilots is a sufficient condition Q49: Proposition 1H
Given the following statement:
(S ⊃ ∼
Given the following statement:
(S ⊃ ∼
Given the following statement:
[N ∨ ∼
Given the following proposition:
∼[(B • ∼X)
A)
Given the following proposition:
[(A ≡ ∼B)
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