If P Q  then which of the following is NOT correct(a) Pˆ  Qˆ (b) | P| | Q| (c) PQˆ  QPˆ (d)

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If P Q
 
 then which of the following is NOT correct
(a) Pˆ  Qˆ (b) | P| | Q|
 

(c) PQˆ  QPˆ (d) P Q  Pˆ Q
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