A) \[Q\to (P\wedge (P\to Q))\]
B) \[P\vee (P\wedge Q)\]
C) \[P\wedge (P\vee Q)\]
D) \[(P\wedge (P\to Q))\to Q\]
Correct Answer: D
Solution :
[d]
\[\therefore \] Hence \[P\wedge (P\to Q)\to Q\] is a tautology.
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