Solve the following questions. Show your solutions completely and clearly. 1. The following is a logical proof for the inference Premises : (mp vq) →r r - (s vt) NSANU Conclusion: p Give a reason to justify each step of the proof. Write the full reason. Do not abbreviate. Steps Reason 1. - SANU 2. ~ u 3. -u Nt 4. -t 5. S 6. ~ SAt 7.r (svt) 8. - (SVt) →Nr 9. (~ s A t) -Nr 10. -r 11. (~p v q) – r 12. - r (p vg)

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