1. part A. Show/Proof following Propositional Logic by truth Tables. a.((a → b) → c) → d b. (p ∧ q) ∨ ¬r c. ¬(X ∧ Y)

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answerhappygod
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1. part A. Show/Proof following Propositional Logic by truth Tables. a.((a → b) → c) → d b. (p ∧ q) ∨ ¬r c. ¬(X ∧ Y)

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1.
part A.
Show/Proof following Propositional Logic by truth Tables.

a.((a → b) → c) → d
b. (p ∧ q) ∨ ¬r
c. ¬(X ∧ Y)= ¬X ∨ ¬Y
part B.
a) Let P(x) denotes the statement x≤12. What will be the truth values of P (8) & P (11)?
b) Suppose P (x, y) denotes the equation y=x+10, what will the truth values of the Propositions P (5,5), P (4,0).
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