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Study Stuff for MCA Examinations - NIMCET
Study Stuff for MCA Examinations - NIMCET
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Which of the following are tautology?
A. $(p \lor r) \rightarrow p$
B. $p \rightarrow (p \land r)$
C. $\sim p \rightarrow (p \rightarrow r)$
D. $(p \land r) \rightarrow (p \rightarrow r)$
E. $\sim(p \rightarrow r) \rightarrow p$
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