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Consider the Following Domain, Assignment of Objects in the Domain \lor

Question 141

Multiple Choice

consider the following domain, assignment of objects in the domain, and assignments sets to predicates.
Domain = {Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, Pluto}
a = Mercury b = Jupiter c = Saturn d = Pluto
Mx = {Mercury, Mars}
Px = {Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune}
Cxy = {, , , , , , , , , ,
, , , , , , , , , , , , , , , , , , , , , , , , , }
-Given the customary truth tables, which of the following theories is modeled by the above interpretation?


A) (∀x) {Px ⊃ [(∃y) Cxy • (∃y) Cyx]} Cab • ~Cba
Cca • ~Cac Cad • ~Cda
B) (∀x) {Px ⊃ [(∃y) Cxy ≡ (∃x) Cyx]} Cab • ~Cba
Cac • ~Cca Cad • ~Cda
C) (∀x) [Px ⊃ (∃y) (Cxy • Cyx) ] Cba • ~Caa
Cca • ~Ccc Cda • ~Cdd
D) (∀x) {Px ⊃ [(∃y) Cxy \lor (∃y) Cyx]}
Cab • ∼Cba Cac • ∼Cca Cad • ∼Cda
E) (∀x) [Px ⊃ (∃y) (Cxy \lor Cyx) ]
Cab • ~Cba Cac • Cad
~(~Cca • ~Cda)

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