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Mr. Dubey • 85.25K Points
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Q. consider the four tsatements: 1.(p→q) ٨(p٨~q) 2.(~p→r)٨(p↔q) 3.p→(~qVr) 4.~(p٨q) V (p↔q) Which one of these four ststements is a tautology.

(A) A
(B) B
(C) C
(D) D
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