1.

What can we correctly say about proposition P1: P1 : (p v q) ^ (q r) v (r v p)

A. P1 is tautology
B. P1 is satisfiable
C. If p is true and q is false and r is false, the P1 is true
D. If p as true and q is true and r is false, then P1 is true
Answer» D. If p as true and q is true and r is false, then P1 is true


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