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56 CHAPTER 2 MATHEMATICAL LANGUAGE AND SYMBOLS Progress Check 2 Elementary Logic Name: Date: Score: Year/Section: Professor: 1. Construct a truth table for each of the following compound propositions and tell whether it is tautology, contradiction or contingency. a. (p- q) - (~q - P) b. (PAq) A (~ qVP) 2. Show that p + q is congruent to (p - q) A (q - P)