If p, q, r are all real numbers, then (p q)

1.	If p, q, r are all real numbers, then (p q)
A.	(p q) (q r) (r p)
B.	3(p q) (q r) (r p)
C.	0
D.	1
Answer» C. 0

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If p, q, r are all real numbers, then (p q)

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