The rule of addition indicates that if we have a disjunction, we may validly infer the denial of one of its disjuncts.
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Q29: Using which rules can one infer B
Q30: A proof is a series of steps
Q31: Implicational rules of inference may, within truth-functional
Q32: The rule of conjunction indicates that if
Q33: The rule of modus ponens indicates that
Q35: The rule of modus tollens indicates that
Q36: A single line in a proof may
Q37: Hypothetical syllogism is an implicational rule.
Q38: Conjunction is an equivalence rule.
Q39: We can apply equivalence rules to parts
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