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Can these be proved using natural deduction? - implication - not - is provable (p (p (q p))) 0. (4 pt): Prove: q 1, (4

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Can these be proved using natural deduction?

- implication - not - is provable

(p (p (q p))) 0. (4 pt): Prove: q 1, (4 pt): Prove-pp p 3. (5 pt): Prove: p -r, r

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