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UGC NET Computer Science Paper 2 9 Consider the compound propositions given below as

(a) p ∨ ~(p ∧ q) 
(b) (p ∧ ~q) ∨ ~(p ∧ q) 
(c) p ∧(q ∨ r) 
Which of the above propositions are tautologies?
 
(A) (a) and (c) 
(B) (b) and (c) 
(C) (a) and (b) 
(D) (a), (b) and (c) 


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 All options wrong! Correct Answer is only (a)

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