Question: Without using a truth table explain whether the following statement is a tautology, a contradiction or a continency: ( a b) (a c) (c b

  1. Without using a truth table explain whether the following statement is a tautology, a contradiction or a continency: ( a b) (a c) (c b )

  1. Is ((pr) (qr)) ((p r ) r ) a tautology, a contradiction or a continency.

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