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1. Consider the following argument. Av(Bv(Cv(Dv(EvF)))) (20%) Provide a derivation, with only primitive rules of inference, to show that the above argument is valid (10%)

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1. Consider the following argument. Av(Bv(Cv(Dv(EvF)))) (20%) Provide a derivation, with only primitive rules of inference, to show that the above argument is valid (10%) To show that this argument is valid, an alternative is to construct a truth table for it. This truth table has many rows-so please don't draw it. Calculate the number of its rows

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