Formal logic

Give formal proofs of the arguments below using the rules of natural deduction You may not use Taut Con or FO Con or Ana Con It is important to number your statements, to indicate subproofs and at each step to give the rule that you are using Gee formele bewyse van die argumente hieronder deur van die reels van natuurhke deduksle gebrutk te maak U mag nie van Taut Con of FO Con of Ana Con gebruk maak me Dit belangrik om u stellings te nommer, subbewyse aan te dut en by elke stap die reel wat u gebruk, te gee Question 5(i) / Vraag 5(i) (10) Prove (PQ)(PQ) without premises Question 5(ii) / Vraag 5(ii) (8) Question 5 (iii) / Vraag 5 (iii) (4) (Formally) prove that the following two premises are contradictory 12xClever(x)xClever(x)