Question: (a) Determine whether the following argument is valid: Pr qr -(pv q) ..r (b) Determine whether the following argument is valid: - qr q

(a) Determine whether the following argument is valid: Pr qr -(pv q) 

(a) Determine whether the following argument is valid: Pr qr -(pv q) ..r (b) Determine whether the following argument is valid: - qr q Vr :. P

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