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  • 21-03-2024
  • Mathematics
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Conditional proof: [(P • Q) • R] ⊃ S / P ⊃ [Q ⊃ (R ⊃ S)]

a) P ⊃ [Q ⊃ (R ⊃ S)]
b) P ⊃ [Q ⊃ (R ⊃ S)]
c) [(P ⊃ (Q ⊃ R)) ⊃ S]
d) [(P ⊃ (Q ⊃ S)) ⊃ R]

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