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BCECE Engineering BCECE Engineering Solved Paper-2003

  • question_answer
    Let p and q be two statements, then \[(p\ \vee q)\vee \tilde{\ }p\] is:

    A)  tautology           

    B)                   contradiction                   

    C)                   both (a) and (b)

    D)                   none of these

    Correct Answer: A

    Solution :

    By truth table
    p q \[p\vee q\] \[\tilde{\ }p\] \[(p\vee q)\vee \tilde{\ }p\]
    T T T F T
    T F T F T
    F T T T T
    F F F T T
    It is clear that \[(p\vee q)\vee \tilde{\ }p\]is a tautology.


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