1002 Lecture : philosophy note
5 Feb 2013
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Justify your answer by symbolizing the following argument in sl (using the suggested sentence letters) and constructing a derivation that shows that the symbolic argument is valid in sd or sd+. The maid did it or the cook did it unless the butler did it or the gardener did it. If the maid did it, then it was done silently; but, if the cook did it, then it was done quickly. However, it was done neither silently nor quickly. The gardener did it if and only if it was done with a rope. If it was done with a rope, then it was not done quickly. On the other hand, if the cook did it or the butler did it, then a pistol was the weapon. But, if a pistol was the weapon, then it was not done silently. It was not done with a rope. (m, c, b, g, s, q, r, p)
